Borneo is the third largest island in the world and is located at the centre of Maritime Southeast Asia. Administratively, this island is divided among Indonesia (Kalimantan, population 12,000,000), Malaysia (Sarawak and Sabah, pop. 6,000,000) and Brunei (pop. 590,000). Indonesians refer to the island as "Kalimantan". However, for people outside of Indonesia, Kalimantan refers to the Indonesian part of the island of Borneo. Malaysia's region of Borneo is called East Malaysia or Malaysian Borneo. Malaysians usually reference the island by either of its two Malaysian provinces. The independent nation of Brunei occupies the remainder of the island. Brunei is the wealthiest nation on the island of Borneo.