312608831 has 2 divisors, whose sum is σ = 312608832. Its totient is φ = 312608830.

The previous prime is 312608809. The next prime is 312608833. The reversal of 312608831 is 138806213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312608831 - 2¹⁸ = 312346687 is a prime.

It is a super-2 number, since 2×312608831² = 195448562438373122, which contains 22 as substring.

Together with 312608833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312608833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156304415 + 156304416.

It is an arithmetic number, because the mean of its divisors is an integer number (156304416).

Almost surely, 2^312608831 is an apocalyptic number.

312608831 is a deficient number, since it is larger than the sum of its proper divisors (1).

312608831 is an equidigital number, since it uses as much as digits as its factorization.

312608831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 312608831 is about 17680.7474672311. The cubic root of 312608831 is about 678.6831717479.

The spelling of 312608831 in words is "three hundred twelve million, six hundred eight thousand, eight hundred thirty-one".