131402904 has 16 divisors (see below), whose sum is σ = 328507320. Its totient is φ = 43800960.

The previous prime is 131402903. The next prime is 131402977. The reversal of 131402904 is 409204131.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5475121 = 131402904 / (1 + 3 + 1 + 4 + 0 + 2 + 9 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131402903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737537 + ... + 2737584.

Almost surely, 2^131402904 is an apocalyptic number.

It is an amenable number.

131402904 is an abundant number, since it is smaller than the sum of its proper divisors (197104416).

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

131402904 is a wasteful number, since it uses less digits than its factorization.

131402904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5475130 (or 5475126 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 131402904 is about 11463.1105726151. The cubic root of 131402904 is about 508.3954492102.

The spelling of 131402904 in words is "one hundred thirty-one million, four hundred two thousand, nine hundred four".