131428804 has 12 divisors (see below), whose sum is σ = 247692844. Its totient is φ = 60659424.

The previous prime is 131428793. The next prime is 131428807. The reversal of 131428804 is 408824131.

It can be written as a sum of positive squares in 2 ways, for example, as 14745600 + 116683204 = 3840^2 + 10802^2 .

It is not an unprimeable number, because it can be changed into a prime (131428807) 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, 1263687 + ... + 1263790.

Almost surely, 2^131428804 is an apocalyptic number.

It is an amenable number.

131428804 is a deficient number, since it is larger than the sum of its proper divisors (116264040).

131428804 is a wasteful number, since it uses less digits than its factorization.

131428804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527494 (or 2527492 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 131428804 is about 11464.2402277691. The cubic root of 131428804 is about 508.4288492257.

The spelling of 131428804 in words is "one hundred thirty-one million, four hundred twenty-eight thousand, eight hundred four".