315155656433731 has 2 divisors, whose sum is σ = 315155656433732. Its totient is φ = 315155656433730.

The previous prime is 315155656433701. The next prime is 315155656433819. The reversal of 315155656433731 is 137334656551513.

It is a weak prime.

It is an emirp because it is prime and its reverse (137334656551513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315155656433731 - 2¹¹ = 315155656431683 is a prime.

It is a super-2 number, since 2×315155656433731² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315155656433701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157577828216865 + 157577828216866.

It is an arithmetic number, because the mean of its divisors is an integer number (157577828216866).

Almost surely, 2^{315155656433731} is an apocalyptic number.

315155656433731 is a deficient number, since it is larger than the sum of its proper divisors (1).

315155656433731 is an equidigital number, since it uses as much as digits as its factorization.

315155656433731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030000, while the sum is 58.

The spelling of 315155656433731 in words is "three hundred fifteen trillion, one hundred fifty-five billion, six hundred fifty-six million, four hundred thirty-three thousand, seven hundred thirty-one".