131515532 has 12 divisors (see below), whose sum is σ = 230250720. Its totient is φ = 65729616.

The previous prime is 131515513. The next prime is 131515583. The reversal of 131515532 is 235515131.

It is a happy number.

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, 6269 + ... + 17387.

It is an arithmetic number, because the mean of its divisors is an integer number (19187560).

Almost surely, 2^131515532 is an apocalyptic number.

It is an amenable number.

131515532 is a deficient number, since it is larger than the sum of its proper divisors (98735188).

131515532 is a wasteful number, since it uses less digits than its factorization.

131515532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14080 (or 14078 counting only the distinct ones).

The product of its digits is 2250, while the sum is 26.

The square root of 131515532 is about 11468.0221485660. The cubic root of 131515532 is about 508.5406596260.

The spelling of 131515532 in words is "one hundred thirty-one million, five hundred fifteen thousand, five hundred thirty-two".