315720651 has 36 divisors (see below), whose sum is σ = 464201192. Its totient is φ = 190826496.

The previous prime is 315720619. The next prime is 315720659. The reversal of 315720651 is 156027513.

It is not a de Polignac number, because 315720651 - 2⁵ = 315720619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315720659) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 728931 + ... + 729363.

Almost surely, 2^315720651 is an apocalyptic number.

315720651 is a deficient number, since it is larger than the sum of its proper divisors (148480541).

315720651 is a wasteful number, since it uses less digits than its factorization.

315720651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 315720651 is about 17768.5297928669. The cubic root of 315720651 is about 680.9276921508.

The spelling of 315720651 in words is "three hundred fifteen million, seven hundred twenty thousand, six hundred fifty-one".