256312911 has 16 divisors (see below), whose sum is σ = 352263168. Its totient is φ = 165698400.

The previous prime is 256312873. The next prime is 256312967. The reversal of 256312911 is 119213652.

It is not a de Polignac number, because 256312911 - 2⁷ = 256312783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256312211) 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, 3130 + ... + 22856.

It is an arithmetic number, because the mean of its divisors is an integer number (22016448).

Almost surely, 2^256312911 is an apocalyptic number.

256312911 is a deficient number, since it is larger than the sum of its proper divisors (95950257).

256312911 is a wasteful number, since it uses less digits than its factorization.

256312911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19862.

The product of its digits is 3240, while the sum is 30.

The square root of 256312911 is about 16009.7754824982. The cubic root of 256312911 is about 635.2190213123.

The spelling of 256312911 in words is "two hundred fifty-six million, three hundred twelve thousand, nine hundred eleven".