315423139 has 2 divisors, whose sum is σ = 315423140. Its totient is φ = 315423138.

The previous prime is 315423107. The next prime is 315423149. The reversal of 315423139 is 931324513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315423139 - 2⁵ = 315423107 is a prime.

It is a super-2 number, since 2×315423139² = 198983513233226642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 315423139.

It is not a weakly prime, because it can be changed into another prime (315423149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157711569 + 157711570.

It is an arithmetic number, because the mean of its divisors is an integer number (157711570).

Almost surely, 2^315423139 is an apocalyptic number.

315423139 is a deficient number, since it is larger than the sum of its proper divisors (1).

315423139 is an equidigital number, since it uses as much as digits as its factorization.

315423139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The square root of 315423139 is about 17760.1559396307. The cubic root of 315423139 is about 680.7137394834.

The spelling of 315423139 in words is "three hundred fifteen million, four hundred twenty-three thousand, one hundred thirty-nine".