<Tr> <Th> Telephone code </Th> <Td> 03775 </Td> </Tr> <Tr> <Th> Vehicle registration </Th> <Td> AS - 03 </Td> </Tr> <P> Mājuli or Majoli (pron: ˈmʌʤʊlɪ) (Assamese: মাজুলী, Assamese pronunciation: (mazuli)) is a river island in the Brahmaputra River, Assam, India and the 1st island district of the country . The island had a total area of 1,250 square kilometres (483 sq mi) at the beginning of the 20th century, but having lost significantly to erosion it had an area of only 352 square kilometres (136 sq mi) in 2014 . Majuli has shrunk as the river surrounding it has grown . However it is recognised by Guinness Book of World Records as World's Largest River Island . </P> <P> The island is formed by the Brahmaputra river in the south and the Kherkutia Xuti, an anabranch of the Brahmaputra, joined by the Subansiri River in the north . Mājuli island is accessible by ferries from the city of Jorhat . The island is about 300--400 kilometres (186--249 mi) east from the state's largest city--Guwahati . It was formed due to course changes by the river Brahmaputra and its tributaries, mainly the Lohit . Mājuli is the abode of the Assamese neo-Vaishnavite culture . </P>

Name the world's largest riverine island formed by the brahmaputra