12312377931 has 12 divisors (see below), whose sum is σ = 19096749672. Its totient is φ = 7035644448.

The previous prime is 12312377899. The next prime is 12312377947. The reversal of 12312377931 is 13977321321.

It is not a de Polignac number, because 12312377931 - 2⁵ = 12312377899 is a prime.

It is a super-2 number, since 2×12312377931² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12312377931.

It is not an unprimeable number, because it can be changed into a prime (12312372931) 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, 41878690 + ... + 41878983.

It is an arithmetic number, because the mean of its divisors is an integer number (1591395806).

Almost surely, 2^12312377931 is an apocalyptic number.

12312377931 is a deficient number, since it is larger than the sum of its proper divisors (6784371741).

12312377931 is an equidigital number, since it uses as much as digits as its factorization.

12312377931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83757690 (or 83757683 counting only the distinct ones).

The product of its digits is 47628, while the sum is 39.

The spelling of 12312377931 in words is "twelve billion, three hundred twelve million, three hundred seventy-seven thousand, nine hundred thirty-one".