313111112231 has 4 divisors (see below), whose sum is σ = 313221637872. Its totient is φ = 313000586592.

The previous prime is 313111112213. The next prime is 313111112263. The reversal of 313111112231 is 132211111313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132211111313 = 1283 ⋅103048411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313111112231 is a prime.

It is a super-2 number, since 2×313111112231² (a number of 24 digits) 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 (313111111231) 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, 55258571 + ... + 55264236.

It is an arithmetic number, because the mean of its divisors is an integer number (78305409468).

Almost surely, 2^313111112231 is an apocalyptic number.

313111112231 is a deficient number, since it is larger than the sum of its proper divisors (110525641).

313111112231 is a wasteful number, since it uses less digits than its factorization.

313111112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110525640.

The product of its digits is 108, while the sum is 20.

Adding to 313111112231 its reverse (132211111313), we get a palindrome (445322223544).

The spelling of 313111112231 in words is "three hundred thirteen billion, one hundred eleven million, one hundred twelve thousand, two hundred thirty-one".