131520556 has 12 divisors (see below), whose sum is σ = 231018480. Its totient is φ = 65515280.

The previous prime is 131520553. The next prime is 131520563. The reversal of 131520556 is 655025131.

It is not an unprimeable number, because it can be changed into a prime (131520553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60040 + ... + 62191.

It is an arithmetic number, because the mean of its divisors is an integer number (19251540).

Almost surely, 2^131520556 is an apocalyptic number.

It is an amenable number.

131520556 is a deficient number, since it is larger than the sum of its proper divisors (99497924).

131520556 is a wasteful number, since it uses less digits than its factorization.

131520556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122504 (or 122502 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 131520556 is about 11468.2411903482. The cubic root of 131520556 is about 508.5471350988.

Adding to 131520556 its reverse (655025131), we get a palindrome (786545687).

The spelling of 131520556 in words is "one hundred thirty-one million, five hundred twenty thousand, five hundred fifty-six".