Indonesia , officially the Republic of Indonesia (Indonesian: Republik Indonesia [rɛpublik ɪndonesia]), is a country in Southeast Asia. Situated between the Indian and Pacific Ocean, it is the largest island country, with more than thirteen thousand islands. It has an estimated population of over 258 million people and is the world's fourth most populous country as well as the most populous Muslim majority country. The world's most populous island of Java contains more than half of the country's population.
Indonesia's republican form of government includes an elected legislature and president. Indonesia has 34 provinces, of which five have Special Administrative status. Its capital city is Jakarta. The country shares land borders with Papua New Guinea, East Timor, and Malaysia. Other neighbouring countries include Singapore, the Philippines, Australia, Palau, and the Indian territory of the Andaman and Nicobar Islands. Indonesia is a founding member of ASEAN and a member of the G-20 major economies. The Indonesian economy is the world's 16th largest by nominal GDP and the 8th largest by GDP at PPP.