315591139 has 2 divisors, whose sum is σ = 315591140. Its totient is φ = 315591138.

The previous prime is 315591131. The next prime is 315591151. The reversal of 315591139 is 931195513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315591139 - 2³ = 315591131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315591098 and 315591107.

It is not a weakly prime, because it can be changed into another prime (315591131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157795569 + 157795570.

It is an arithmetic number, because the mean of its divisors is an integer number (157795570).

Almost surely, 2^315591139 is an apocalyptic number.

315591139 is a deficient number, since it is larger than the sum of its proper divisors (1).

315591139 is an equidigital number, since it uses as much as digits as its factorization.

315591139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18225, while the sum is 37.

The square root of 315591139 is about 17764.8849982205. The cubic root of 315591139 is about 680.8345714672.

The spelling of 315591139 in words is "three hundred fifteen million, five hundred ninety-one thousand, one hundred thirty-nine".