If the difference between the sum of the digits at odd places from the right and the sum of the digits at even places from the right of a number is either 0 or a multiple of 11, then the number is divisible by 11.
The given number is 901153.
Sum of the digits at odd places = 3 + 1 + 0 = 4
Sum of the digits at even places = 5 + 1 + 9 = 15
Difference = 15 – 4 = 11, which is a multiple of 11.