131389504 has 28 divisors (see below), whose sum is σ = 261191248. Its totient is φ = 65577600.

The previous prime is 131389499. The next prime is 131389513. The reversal of 131389504 is 405983131.

It is a super-2 number, since 2×131389504² = 34526403522732032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131389504.

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, 42739 + ... + 45709.

Almost surely, 2^131389504 is an apocalyptic number.

It is an amenable number.

131389504 is a deficient number, since it is larger than the sum of its proper divisors (129801744).

131389504 is an equidigital number, since it uses as much as digits as its factorization.

131389504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674 (or 3664 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 131389504 is about 11462.5260741252. The cubic root of 131389504 is about 508.3781671705.

The spelling of 131389504 in words is "one hundred thirty-one million, three hundred eighty-nine thousand, five hundred four".