317290220 has 24 divisors (see below), whose sum is σ = 717564624. Its totient is φ = 117153216.

The previous prime is 317290213. The next prime is 317290229. The reversal of 317290220 is 22092713.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 317290220.

It is not an unprimeable number, because it can be changed into a prime (317290229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609914 + ... + 610433.

It is an arithmetic number, because the mean of its divisors is an integer number (29898526).

Almost surely, 2^317290220 is an apocalyptic number.

It is an amenable number.

317290220 is an abundant number, since it is smaller than the sum of its proper divisors (400274404).

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

317290220 is a wasteful number, since it uses less digits than its factorization.

317290220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220369 (or 1220367 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 317290220 is about 17812.6421397838. The cubic root of 317290220 is about 682.0542120573.

The spelling of 317290220 in words is "three hundred seventeen million, two hundred ninety thousand, two hundred twenty".