313223861 has 24 divisors (see below), whose sum is σ = 346734720. Its totient is φ = 281863296.

The previous prime is 313223849. The next prime is 313223879. The reversal of 313223861 is 168322313.

It is not a de Polignac number, because 313223861 - 2²⁶ = 246114997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313223831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3964820 + ... + 3964898.

It is an arithmetic number, because the mean of its divisors is an integer number (14447280).

Almost surely, 2^313223861 is an apocalyptic number.

It is an amenable number.

313223861 is a deficient number, since it is larger than the sum of its proper divisors (33510859).

313223861 is an equidigital number, since it uses as much as digits as its factorization.

313223861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 222 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 313223861 is about 17698.1315680498. The cubic root of 313223861 is about 679.1279630539.

The spelling of 313223861 in words is "three hundred thirteen million, two hundred twenty-three thousand, eight hundred sixty-one".