256264331 has 8 divisors (see below), whose sum is σ = 263410224. Its totient is φ = 249130080.

The previous prime is 256264303. The next prime is 256264363. The reversal of 256264331 is 133462652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256264331 is a prime.

It is a super-2 number, since 2×256264331² = 131342814685755122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256264301) 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 7 ways as a sum of consecutive naturals, for example, 60596 + ... + 64686.

It is an arithmetic number, because the mean of its divisors is an integer number (32926278).

Almost surely, 2^256264331 is an apocalyptic number.

256264331 is a deficient number, since it is larger than the sum of its proper divisors (7145893).

256264331 is a wasteful number, since it uses less digits than its factorization.

256264331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821.

The product of its digits is 25920, while the sum is 32.

The square root of 256264331 is about 16008.2582125602. The cubic root of 256264331 is about 635.1788869186.

The spelling of 256264331 in words is "two hundred fifty-six million, two hundred sixty-four thousand, three hundred thirty-one".