315628621 has 48 divisors (see below), whose sum is σ = 413683200. Its totient is φ = 235572480.

The previous prime is 315628571. The next prime is 315628633. The reversal of 315628621 is 126826513.

It is not a de Polignac number, because 315628621 - 2¹³ = 315620429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315628661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3546345 + ... + 3546433.

It is an arithmetic number, because the mean of its divisors is an integer number (8618400).

Almost surely, 2^315628621 is an apocalyptic number.

It is an amenable number.

315628621 is a deficient number, since it is larger than the sum of its proper divisors (98054579).

315628621 is a wasteful number, since it uses less digits than its factorization.

315628621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 239 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 315628621 is about 17765.9399132160. The cubic root of 315628621 is about 680.8615240946.

The spelling of 315628621 in words is "three hundred fifteen million, six hundred twenty-eight thousand, six hundred twenty-one".