256131204 has 24 divisors (see below), whose sum is σ = 683016768. Its totient is φ = 73180320.

The previous prime is 256131173. The next prime is 256131217. The reversal of 256131204 is 402131652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524507 + ... + 1524674.

It is an arithmetic number, because the mean of its divisors is an integer number (28459032).

Almost surely, 2^256131204 is an apocalyptic number.

It is an amenable number.

256131204 is an abundant number, since it is smaller than the sum of its proper divisors (426885564).

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

256131204 is a wasteful number, since it uses less digits than its factorization.

256131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049195 (or 3049193 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 256131204 is about 16004.0995997900. The cubic root of 256131204 is about 635.0688779730.

Adding to 256131204 its reverse (402131652), we get a palindrome (658262856).

The spelling of 256131204 in words is "two hundred fifty-six million, one hundred thirty-one thousand, two hundred four".