312468631 has 2 divisors, whose sum is σ = 312468632. Its totient is φ = 312468630.

The previous prime is 312468613. The next prime is 312468677. The reversal of 312468631 is 136864213.

It is a happy number.

Together with previous prime (312468613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312468631 - 2⁵ = 312468599 is a prime.

It is a super-2 number, since 2×312468631² = 195273290718028322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312468601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156234315 + 156234316.

It is an arithmetic number, because the mean of its divisors is an integer number (156234316).

Almost surely, 2^312468631 is an apocalyptic number.

312468631 is a deficient number, since it is larger than the sum of its proper divisors (1).

312468631 is an equidigital number, since it uses as much as digits as its factorization.

312468631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 312468631 is about 17676.7822580921. The cubic root of 312468631 is about 678.5816971046.

The spelling of 312468631 in words is "three hundred twelve million, four hundred sixty-eight thousand, six hundred thirty-one".