Saudi Arabia's Crown Prince Sultan bin Abdul-Aziz Al Saud has died.

He was the seventh of King Abdulaziz Al Saud's 36 sons, each of whom have had significant and powerful roles within the kingdom.

Prince Sultan was never educated at a conventional school but learnt to read and write using tradition methods.

In 1947, his father named him the Emir of Riyadh. He was appointed minister of agriculture in 1953, then minister of transport on 1955, and minister of defence in 1962.

Prince Sultan became deputy prime minister in 1982 and was named the heir apparent after his elder brother Abdullah Abdulaziz was crowned King in 2005.

Al Jazeera's Stefani Dekker reports.