313518689291 has 2 divisors, whose sum is σ = 313518689292. Its totient is φ = 313518689290.

The previous prime is 313518689269. The next prime is 313518689299. The reversal of 313518689291 is 192986815313.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (192986815313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313518689291 - 2⁶ = 313518689227 is a prime.

It is not a weakly prime, because it can be changed into another prime (313518689299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156759344645 + 156759344646.

It is an arithmetic number, because the mean of its divisors is an integer number (156759344646).

Almost surely, 2^313518689291 is an apocalyptic number.

313518689291 is a deficient number, since it is larger than the sum of its proper divisors (1).

313518689291 is an equidigital number, since it uses as much as digits as its factorization.

313518689291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 56.

The spelling of 313518689291 in words is "three hundred thirteen billion, five hundred eighteen million, six hundred eighty-nine thousand, two hundred ninety-one".