315817427 has 2 divisors, whose sum is σ = 315817428. Its totient is φ = 315817426.

The previous prime is 315817421. The next prime is 315817457. The reversal of 315817427 is 724718513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315817427 - 2¹² = 315813331 is a prime.

It is not a weakly prime, because it can be changed into another prime (315817421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157908713 + 157908714.

It is an arithmetic number, because the mean of its divisors is an integer number (157908714).

Almost surely, 2^315817427 is an apocalyptic number.

315817427 is a deficient number, since it is larger than the sum of its proper divisors (1).

315817427 is an equidigital number, since it uses as much as digits as its factorization.

315817427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 315817427 is about 17771.2528258421. The cubic root of 315817427 is about 680.9972586344.

The spelling of 315817427 in words is "three hundred fifteen million, eight hundred seventeen thousand, four hundred twenty-seven".