315251339 has 4 divisors (see below), whose sum is σ = 339501456. Its totient is φ = 291001224.

The previous prime is 315251333. The next prime is 315251357. The reversal of 315251339 is 933152513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933152513 = 97 ⋅9620129.

It is a cyclic number.

It is not a de Polignac number, because 315251339 - 2¹⁶ = 315185803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315251333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12125039 + ... + 12125064.

It is an arithmetic number, because the mean of its divisors is an integer number (84875364).

Almost surely, 2^315251339 is an apocalyptic number.

315251339 is a deficient number, since it is larger than the sum of its proper divisors (24250117).

315251339 is a wasteful number, since it uses less digits than its factorization.

315251339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24250116.

The product of its digits is 12150, while the sum is 32.

The square root of 315251339 is about 17755.3186116161. The cubic root of 315251339 is about 680.5901300155.

The spelling of 315251339 in words is "three hundred fifteen million, two hundred fifty-one thousand, three hundred thirty-nine".