312153120431 has 2 divisors, whose sum is σ = 312153120432. Its totient is φ = 312153120430.

The previous prime is 312153120413. The next prime is 312153120449. The reversal of 312153120431 is 134021351213.

Together with previous prime (312153120413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (312153120413) and next prime (312153120449).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312153120431 is a prime.

It is a super-2 number, since 2×312153120431² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312153120431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312153120491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156076560215 + 156076560216.

It is an arithmetic number, because the mean of its divisors is an integer number (156076560216).

Almost surely, 2^312153120431 is an apocalyptic number.

312153120431 is a deficient number, since it is larger than the sum of its proper divisors (1).

312153120431 is an equidigital number, since it uses as much as digits as its factorization.

312153120431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 312153120431 its reverse (134021351213), we get a palindrome (446174471644).

The spelling of 312153120431 in words is "three hundred twelve billion, one hundred fifty-three million, one hundred twenty thousand, four hundred thirty-one".