318368064013 has 2 divisors, whose sum is σ = 318368064014. Its totient is φ = 318368064012.

The previous prime is 318368064011. The next prime is 318368064191. The reversal of 318368064013 is 310460863813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297219051684 + 21149012329 = 545178^2 + 145427^2 .

It is a cyclic number.

It is not a de Polignac number, because 318368064013 - 2¹ = 318368064011 is a prime.

Together with 318368064011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318368064011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159184032006 + 159184032007.

It is an arithmetic number, because the mean of its divisors is an integer number (159184032007).

Almost surely, 2^318368064013 is an apocalyptic number.

It is an amenable number.

318368064013 is a deficient number, since it is larger than the sum of its proper divisors (1).

318368064013 is an equidigital number, since it uses as much as digits as its factorization.

318368064013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 318368064013 in words is "three hundred eighteen billion, three hundred sixty-eight million, sixty-four thousand, thirteen".