315665020 has 24 divisors (see below), whose sum is σ = 723160368. Its totient is φ = 114787200.

The previous prime is 315665017. The next prime is 315665023. The reversal of 315665020 is 20566513.

It is an interprime number because it is at equal distance from previous prime (315665017) and next prime (315665023).

It is a self number, because there is not a number n which added to its sum of digits gives 315665020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315665023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717201 + ... + 717640.

It is an arithmetic number, because the mean of its divisors is an integer number (30131682).

Almost surely, 2^315665020 is an apocalyptic number.

It is an amenable number.

315665020 is an abundant number, since it is smaller than the sum of its proper divisors (407495348).

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

315665020 is a wasteful number, since it uses less digits than its factorization.

315665020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434861 (or 1434859 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 315665020 is about 17766.9642876885. The cubic root of 315665020 is about 680.8876959143.

The spelling of 315665020 in words is "three hundred fifteen million, six hundred sixty-five thousand, twenty".