convert string to number

[aambasht1626789554]

I am trying to convert phone numbers stored as string to number in Tmap. I tried below. Both give number format exception. I checked that they work fine until the 9th digit but throw that exception starting 10th. What can i do to resolve this?

Integer.parseInt("8284670083")

Mathematical.INT("8284670083") 

[Senthil1]

Integer value ranges from -2147483648 to +2147483647.. .

8284670083 - this value exceed this range. hence you are getting exception.