12313121831 has 2 divisors, whose sum is σ = 12313121832. Its totient is φ = 12313121830.

The previous prime is 12313121801. The next prime is 12313121833. The reversal of 12313121831 is 13812131321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12313121831 - 2²⁶ = 12246012967 is a prime.

It is a super-2 number, since 2×12313121831² (a number of 21 digits) contains 22 as substring.

Together with 12313121833, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12313121831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12313121833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156560915 + 6156560916.

It is an arithmetic number, because the mean of its divisors is an integer number (6156560916).

Almost surely, 2^12313121831 is an apocalyptic number.

12313121831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12313121831 is an equidigital number, since it uses as much as digits as its factorization.

12313121831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The spelling of 12313121831 in words is "twelve billion, three hundred thirteen million, one hundred twenty-one thousand, eight hundred thirty-one".