312351031 has 2 divisors, whose sum is σ = 312351032. Its totient is φ = 312351030.

The previous prime is 312351019. The next prime is 312351037. The reversal of 312351031 is 130153213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312351031 - 2⁵ = 312350999 is a prime.

It is a super-2 number, since 2×312351031² = 195126333133525922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312351037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156175515 + 156175516.

It is an arithmetic number, because the mean of its divisors is an integer number (156175516).

Almost surely, 2^312351031 is an apocalyptic number.

312351031 is a deficient number, since it is larger than the sum of its proper divisors (1).

312351031 is an equidigital number, since it uses as much as digits as its factorization.

312351031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 312351031 is about 17673.4555477982. The cubic root of 312351031 is about 678.4965565891.

The spelling of 312351031 in words is "three hundred twelve million, three hundred fifty-one thousand, thirty-one".