Population: About 267 million

Capital city: Jakarta 

Neighbouring countries: Indonesia has land borders with Malaysia on the island of Borneo, Papua New Guinea on the island of New Guinea and East Timor on the island of Timor.

Geography: Indonesia is an archipelago of over 17,000 islands, with the five main islands being Sumatra, Java, Borneo (known as Kalimantan on the Indonesian side), Sulawesi and New Guinea. Parts of Indonesia are quite mountainous, with Puncak Jaya, located on West Papua, being the highest peak. Much of the country is covered by dense, tropical forests. Located along the Ring of Fire, the country has many volcanoes and is also subject to frequent earthquakes.

Political system: Unitary presidential constitutional republic

Major religions: Indonesia is the largest Muslim country in the world, although freedom of religion is permitted, with Christianity and Buddhism also widely practised.

Main languages: Bahasa Indonesia, English 

Money: The Indonesian rupiah (IDR), divided into 100 sen. There are plenty of local and international banks in Indonesia, but many expats choose to maintain their existing bank account in their home country.

Tipping: Standard 10 to 15 percent in restaurants unless included as a service charge. Round up the bill for taxis and give slightly more for hired drivers.

Time: Indonesia spans three time zones: GMT +7 (West, including Java and Sumatra), GMT +8 (Central, including Bali, Sulawesi and Lombok), GMT +9 (East, including West Papua).

Electricity: 230 volts, 50 Hz. Plugs with two round pins are generally used throughout the country

Internet domain: .id

International dialling code: +62

Emergency numbers: 110 (police), 118 (ambulance)

Transport and driving: Cars drive on the left-hand side of the road. Indonesia has an established public transport system. Taxis are also plentiful. However, traffic can reach nightmarish proportions in Indonesian cities and driving is best avoided; many expats hire a local driver instead.