256884669231 has 16 divisors (see below), whose sum is σ = 361699203840. Its totient is φ = 161721256320.

The previous prime is 256884669229. The next prime is 256884669233. The reversal of 256884669231 is 132966488652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (256884669229) and next prime (256884669233).

It is not a de Polignac number, because 256884669231 - 2¹ = 256884669229 is a prime.

It is a super-2 number, since 2×256884669231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256884669233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7227850 + ... + 7263303.

It is an arithmetic number, because the mean of its divisors is an integer number (22606200240).

Almost surely, 2^256884669231 is an apocalyptic number.

256884669231 is a deficient number, since it is larger than the sum of its proper divisors (104814534609).

256884669231 is a wasteful number, since it uses less digits than its factorization.

256884669231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14491486.

The product of its digits is 29859840, while the sum is 60.

The spelling of 256884669231 in words is "two hundred fifty-six billion, eight hundred eighty-four million, six hundred sixty-nine thousand, two hundred thirty-one".