256596431 has 8 divisors (see below), whose sum is σ = 315811104. Its totient is φ = 203021280.

The previous prime is 256596427. The next prime is 256596451. The reversal of 256596431 is 134695652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256596431 - 2² = 256596427 is a prime.

It is a super-2 number, since 2×256596431² = 131683456803875522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256596401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1409780 + ... + 1409961.

It is an arithmetic number, because the mean of its divisors is an integer number (39476388).

Almost surely, 2^256596431 is an apocalyptic number.

256596431 is a deficient number, since it is larger than the sum of its proper divisors (59214673).

256596431 is a wasteful number, since it uses less digits than its factorization.

256596431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819761.

The product of its digits is 194400, while the sum is 41.

The square root of 256596431 is about 16018.6276253617. The cubic root of 256596431 is about 635.4531504116.

The spelling of 256596431 in words is "two hundred fifty-six million, five hundred ninety-six thousand, four hundred thirty-one".