Place of Birth
Aryabhata mentions in the Aryabhatiya that hi was composed 3,600 years into the Kali Yuga.
His major work, Aryabhatiya, a compendium of mathematics and astronomy, was extensively referred to in the Indian mathematical literature and has survived to modern times. It claims that it is a translation by Aryabhata, but the Sanskrit name of this work is not known.
It also contained a description of several astronomical instruments. Probably dating from the 9th century.
About his life
The name "Aryabhatiya" is due to later commentators. Aryabhata himself may not have given it a name. His disciple Bhaskara_I calls it Ashmakatantr.
Which each line is an aid to memory for a complex system. Thus, the explication of meaning is due to commentators. The Aryabhatiya presented a number of innovations in mathematics and astronomy in verse form, which were influential for many centuries. The duration of the planetary revolutions during a mahayuga is given as 4.32 million years. The text consists of the 108 verses and 13 introductory verses.
Approximation of π
It is speculated that Aryabhata used the word āsanna (approaching), to mean that not only is this an approximation.
Later writers substituted it with jab, meaning "pocket" or "fold in a garment". In Arabic, jibs is a meaningless word. Later in the 12th century.