313115389 has 2 divisors, whose sum is σ = 313115390. Its totient is φ = 313115388.

The previous prime is 313115371. The next prime is 313115417. The reversal of 313115389 is 983511313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310112100 + 3003289 = 17610^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 313115389 - 2⁵ = 313115357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313115489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156557694 + 156557695.

It is an arithmetic number, because the mean of its divisors is an integer number (156557695).

Almost surely, 2^313115389 is an apocalyptic number.

It is an amenable number.

313115389 is a deficient number, since it is larger than the sum of its proper divisors (1).

313115389 is an equidigital number, since it uses as much as digits as its factorization.

313115389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 313115389 is about 17695.0667984046. The cubic root of 313115389 is about 679.0495581355.

The spelling of 313115389 in words is "three hundred thirteen million, one hundred fifteen thousand, three hundred eighty-nine".