131520612 has 12 divisors (see below), whose sum is σ = 306881456. Its totient is φ = 43840200.

The previous prime is 131520593. The next prime is 131520629. The reversal of 131520612 is 216025131.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5480014 + ... + 5480037.

Almost surely, 2^131520612 is an apocalyptic number.

131520612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131520612 is an abundant number, since it is smaller than the sum of its proper divisors (175360844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131520612 is a wasteful number, since it uses less digits than its factorization.

131520612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10960058 (or 10960056 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 131520612 is about 11468.2436318732. The cubic root of 131520612 is about 508.5472072767.

Adding to 131520612 its reverse (216025131), we get a palindrome (347545743).

The spelling of 131520612 in words is "one hundred thirty-one million, five hundred twenty thousand, six hundred twelve".