I am glad Kangana is doing Jayalalitha, says Vidya Balan

Vidya Balan says it will be fun to play Shakuntala Devi's character in her next film as the math genius led a fascinating life and had a crazy side to her.

Shakuntala Devi was known for her ability to do swift calculations. Her genius was first discovered at the age of 5, when she solved a math problem for 18-year-old students.

"It was amazing to know that someone who is known as a human computer is so much fun. She had a crazy side to her. I think math was the only straight side to her and this makes her life so fascinating. She is fun. And I never associate math with fun," Vidya said in a group interview here.

The "Tumhari Sulu" actor will soon start preparing for the biopic, which begins shooting in October.

"I am nervous about this because I haven't had much time to prepare. It is a very interesting character but she was a woman, about whom you have a certain perception of being a mathematician but she is fun. Also, she had great sense of humour and I identified with it."