256652231 has 4 divisors (see below), whose sum is σ = 279984264. Its totient is φ = 233320200.

The previous prime is 256652219. The next prime is 256652257. The reversal of 256652231 is 132256652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256652231 - 2²² = 252457927 is a prime.

It is a super-2 number, since 2×256652231² = 131740735354554722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256657231) 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, 11666000 + ... + 11666021.

It is an arithmetic number, because the mean of its divisors is an integer number (69996066).

Almost surely, 2^256652231 is an apocalyptic number.

256652231 is a deficient number, since it is larger than the sum of its proper divisors (23332033).

256652231 is a wasteful number, since it uses less digits than its factorization.

256652231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23332032.

The product of its digits is 21600, while the sum is 32.

The square root of 256652231 is about 16020.3692529230. The cubic root of 256652231 is about 635.4992093996.

The spelling of 256652231 in words is "two hundred fifty-six million, six hundred fifty-two thousand, two hundred thirty-one".