10312131231 has 12 divisors (see below), whose sum is σ = 15679264120. Its totient is φ = 6512924880.

The previous prime is 10312131223. The next prime is 10312131233. The reversal of 10312131231 is 13213121301.

10312131231 is a `hidden beast` number, since 10 + 312 + 1 + 312 + 31 = 666.

It is not a de Polignac number, because 10312131231 - 2³ = 10312131223 is a prime.

It is a super-2 number, since 2×10312131231² (a number of 21 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 (10312131233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30152260 + ... + 30152601.

Almost surely, 2^10312131231 is an apocalyptic number.

10312131231 is a deficient number, since it is larger than the sum of its proper divisors (5367132889).

10312131231 is a wasteful number, since it uses less digits than its factorization.

10312131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60304886 (or 60304883 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 10312131231 its reverse (13213121301), we get a palindrome (23525252532).

The spelling of 10312131231 in words is "ten billion, three hundred twelve million, one hundred thirty-one thousand, two hundred thirty-one".