131011522 has 16 divisors (see below), whose sum is σ = 198782712. Its totient is φ = 64753920.

The previous prime is 131011499. The next prime is 131011541. The reversal of 131011522 is 225110131.

It can be written as a sum of positive squares in 4 ways, for example, as 113614281 + 17397241 = 10659^2 + 4171^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131011496 and 131011505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148948 + ... + 149824.

Almost surely, 2^131011522 is an apocalyptic number.

131011522 is a deficient number, since it is larger than the sum of its proper divisors (67771190).

131011522 is a wasteful number, since it uses less digits than its factorization.

131011522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 131011522 is about 11446.0264720994. The cubic root of 131011522 is about 507.8901972986.

Adding to 131011522 its reverse (225110131), we get a palindrome (356121653).

The spelling of 131011522 in words is "one hundred thirty-one million, eleven thousand, five hundred twenty-two".