315107131 has 2 divisors, whose sum is σ = 315107132. Its totient is φ = 315107130.

The previous prime is 315107113. The next prime is 315107183. The reversal of 315107131 is 131701513.

Together with previous prime (315107113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315107131 - 2⁹ = 315106619 is a prime.

It is a super-2 number, since 2×315107131² = 198585008014102322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315107431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157553565 + 157553566.

It is an arithmetic number, because the mean of its divisors is an integer number (157553566).

Almost surely, 2^315107131 is an apocalyptic number.

315107131 is a deficient number, since it is larger than the sum of its proper divisors (1).

315107131 is an equidigital number, since it uses as much as digits as its factorization.

315107131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 315107131 is about 17751.2571667474. The cubic root of 315107131 is about 680.4863382167.

Adding to 315107131 its reverse (131701513), we get a palindrome (446808644).

The spelling of 315107131 in words is "three hundred fifteen million, one hundred seven thousand, one hundred thirty-one".