313112231 has 4 divisors (see below), whose sum is σ = 313201152. Its totient is φ = 313023312.

The previous prime is 313112161. The next prime is 313112249. The reversal of 313112231 is 132211313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132211313 = 13 ⋅10170101.

It is a cyclic number.

It is not a de Polignac number, because 313112231 - 2²⁶ = 246003367 is a prime.

It is a super-2 number, since 2×313112231² = 196078538403594722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313112251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38951 + ... + 46296.

It is an arithmetic number, because the mean of its divisors is an integer number (78300288).

Almost surely, 2^313112231 is an apocalyptic number.

313112231 is a deficient number, since it is larger than the sum of its proper divisors (88921).

313112231 is an equidigital number, since it uses as much as digits as its factorization.

313112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88920.

The product of its digits is 108, while the sum is 17.

The square root of 313112231 is about 17694.9775642695. The cubic root of 313112231 is about 679.0472752223.

Adding to 313112231 its reverse (132211313), we get a palindrome (445323544).

The spelling of 313112231 in words is "three hundred thirteen million, one hundred twelve thousand, two hundred thirty-one".