12310131231 has 48 divisors (see below), whose sum is σ = 18991604736. Its totient is φ = 7666346688.

The previous prime is 12310131199. The next prime is 12310131247. The reversal of 12310131231 is 13213101321.

12310131231 is a `hidden beast` number, since 12 + 310 + 1 + 312 + 31 = 666.

It is not a de Polignac number, because 12310131231 - 2⁵ = 12310131199 is a prime.

It is a super-2 number, since 2×12310131231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310131131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2487946 + ... + 2492888.

It is an arithmetic number, because the mean of its divisors is an integer number (395658432).

Almost surely, 2^12310131231 is an apocalyptic number.

12310131231 is a deficient number, since it is larger than the sum of its proper divisors (6681473505).

12310131231 is a wasteful number, since it uses less digits than its factorization.

12310131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252 (or 5249 counting only the distinct ones).

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

Adding to 12310131231 its reverse (13213101321), we get a palindrome (25523232552).

The spelling of 12310131231 in words is "twelve billion, three hundred ten million, one hundred thirty-one thousand, two hundred thirty-one".