312239488831 has 2 divisors, whose sum is σ = 312239488832. Its totient is φ = 312239488830.

The previous prime is 312239488829. The next prime is 312239488843. The reversal of 312239488831 is 138884932213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312239488831 - 2¹ = 312239488829 is a prime.

It is a super-2 number, since 2×312239488831² (a number of 24 digits) contains 22 as substring.

Together with 312239488829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312239488861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156119744415 + 156119744416.

It is an arithmetic number, because the mean of its divisors is an integer number (156119744416).

Almost surely, 2^312239488831 is an apocalyptic number.

312239488831 is a deficient number, since it is larger than the sum of its proper divisors (1).

312239488831 is an equidigital number, since it uses as much as digits as its factorization.

312239488831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 52.

The spelling of 312239488831 in words is "three hundred twelve billion, two hundred thirty-nine million, four hundred eighty-eight thousand, eight hundred thirty-one".