313110031231 has 4 divisors (see below), whose sum is σ = 315030951832. Its totient is φ = 311189110632.

The previous prime is 313110031229. The next prime is 313110031331. The reversal of 313110031231 is 132130011313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132130011313 = 1039 ⋅127170367.

It is a cyclic number.

It is not a de Polignac number, because 313110031231 - 2¹ = 313110031229 is a prime.

It is a super-2 number, since 2×313110031231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313110031199 and 313110031208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313110031211) 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, 960460056 + ... + 960460381.

It is an arithmetic number, because the mean of its divisors is an integer number (78757737958).

Almost surely, 2^313110031231 is an apocalyptic number.

313110031231 is a deficient number, since it is larger than the sum of its proper divisors (1920920601).

313110031231 is a wasteful number, since it uses less digits than its factorization.

313110031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920920600.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 313110031231 its reverse (132130011313), we get a palindrome (445240042544).

The spelling of 313110031231 in words is "three hundred thirteen billion, one hundred ten million, thirty-one thousand, two hundred thirty-one".