318373313 has 2 divisors, whose sum is σ = 318373314. Its totient is φ = 318373312.

The previous prime is 318373283. The next prime is 318373351. The reversal of 318373313 is 313373813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236144689 + 82228624 = 15367^2 + 9068^2 .

It is an emirp because it is prime and its reverse (313373813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318373313 - 2¹⁶ = 318307777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318373313.

It is not a weakly prime, because it can be changed into another prime (318373373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159186656 + 159186657.

It is an arithmetic number, because the mean of its divisors is an integer number (159186657).

Almost surely, 2^318373313 is an apocalyptic number.

It is an amenable number.

318373313 is a deficient number, since it is larger than the sum of its proper divisors (1).

318373313 is an equidigital number, since it uses as much as digits as its factorization.

318373313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 318373313 is about 17843.0186067268. The cubic root of 318373313 is about 682.8294110385.

The spelling of 318373313 in words is "three hundred eighteen million, three hundred seventy-three thousand, three hundred thirteen".