312634013 has 2 divisors, whose sum is σ = 312634014. Its totient is φ = 312634012.

The previous prime is 312633973. The next prime is 312634027. The reversal of 312634013 is 310436213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244703449 + 67930564 = 15643^2 + 8242^2 .

It is a cyclic number.

It is not a de Polignac number, because 312634013 - 2¹⁰ = 312632989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 312634013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312634043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156317006 + 156317007.

It is an arithmetic number, because the mean of its divisors is an integer number (156317007).

Almost surely, 2^312634013 is an apocalyptic number.

It is an amenable number.

312634013 is a deficient number, since it is larger than the sum of its proper divisors (1).

312634013 is an equidigital number, since it uses as much as digits as its factorization.

312634013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 312634013 is about 17681.4595834167. The cubic root of 312634013 is about 678.7013948850.

The spelling of 312634013 in words is "three hundred twelve million, six hundred thirty-four thousand, thirteen".