315299820 has 48 divisors (see below), whose sum is σ = 963099648. Its totient is φ = 76436160.

The previous prime is 315299797. The next prime is 315299843. The reversal of 315299820 is 28992513.

It is an interprime number because it is at equal distance from previous prime (315299797) and next prime (315299843).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238204 + ... + 239523.

It is an arithmetic number, because the mean of its divisors is an integer number (20064576).

Almost surely, 2^315299820 is an apocalyptic number.

315299820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

315299820 is an abundant number, since it is smaller than the sum of its proper divisors (647799828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315299820 is a wasteful number, since it uses less digits than its factorization.

315299820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477750 (or 477748 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 315299820 is about 17756.6838120185. The cubic root of 315299820 is about 680.6250164640.

The spelling of 315299820 in words is "three hundred fifteen million, two hundred ninety-nine thousand, eight hundred twenty".