131302904 has 8 divisors (see below), whose sum is σ = 246192960. Its totient is φ = 65651448.

The previous prime is 131302903. The next prime is 131302909. The reversal of 131302904 is 409203131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 131302904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131302903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8206424 + ... + 8206439.

It is an arithmetic number, because the mean of its divisors is an integer number (30774120).

Almost surely, 2^131302904 is an apocalyptic number.

It is an amenable number.

131302904 is a deficient number, since it is larger than the sum of its proper divisors (114890056).

131302904 is a wasteful number, since it uses less digits than its factorization.

131302904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16412869 (or 16412865 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 131302904 is about 11458.7479246207. The cubic root of 131302904 is about 508.2664504198.

The spelling of 131302904 in words is "one hundred thirty-one million, three hundred two thousand, nine hundred four".