315012331 has 2 divisors, whose sum is σ = 315012332. Its totient is φ = 315012330.

The previous prime is 315012323. The next prime is 315012349. The reversal of 315012331 is 133210513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315012331 - 2³ = 315012323 is a prime.

It is a super-2 number, since 2×315012331² = 198465537364107122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315012299 and 315012308.

It is not a weakly prime, because it can be changed into another prime (315012361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157506165 + 157506166.

It is an arithmetic number, because the mean of its divisors is an integer number (157506166).

Almost surely, 2^315012331 is an apocalyptic number.

315012331 is a deficient number, since it is larger than the sum of its proper divisors (1).

315012331 is an equidigital number, since it uses as much as digits as its factorization.

315012331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 315012331 is about 17748.5867324697. The cubic root of 315012331 is about 680.4180899197.

Adding to 315012331 its reverse (133210513), we get a palindrome (448222844).

The spelling of 315012331 in words is "three hundred fifteen million, twelve thousand, three hundred thirty-one".