313256881 has 16 divisors (see below), whose sum is σ = 361449088. Its totient is φ = 265939200.

The previous prime is 313256863. The next prime is 313256893. The reversal of 313256881 is 188652313.

It is a cyclic number.

It is not a de Polignac number, because 313256881 - 2¹⁵ = 313224113 is a prime.

It is a super-2 number, since 2×313256881² = 196259746987696322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 313256881.

It is not an unprimeable number, because it can be changed into a prime (313256381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548326 + ... + 548896.

It is an arithmetic number, because the mean of its divisors is an integer number (22590568).

Almost surely, 2^313256881 is an apocalyptic number.

It is an amenable number.

313256881 is a deficient number, since it is larger than the sum of its proper divisors (48192207).

313256881 is a wasteful number, since it uses less digits than its factorization.

313256881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192.

The product of its digits is 34560, while the sum is 37.

The square root of 313256881 is about 17699.0644103015. The cubic root of 313256881 is about 679.1518267290.

The spelling of 313256881 in words is "three hundred thirteen million, two hundred fifty-six thousand, eight hundred eighty-one".