The Republic of Indonesia is a country in Southeast Asia. Indonesia comprises 17,508 islands. With 230 million people, it is the world's fourth most populous country and the third most populous Asian country. Indonesia is a republic, with an elected legislature and president. The capital and largest city of Indonesia is Jakarta. The country shares land borders with Papua New Guinea, East Timor, and Malaysia. Other neighboring countries include Singapore, Philippines, Australia, and the Indian territory of the Andaman and Nicobar Islands.