317491220 has 24 divisors (see below), whose sum is σ = 667475424. Its totient is φ = 126854816.

The previous prime is 317491219. The next prime is 317491247. The reversal of 317491220 is 22194713.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10559 + ... + 27321.

It is an arithmetic number, because the mean of its divisors is an integer number (27811476).

Almost surely, 2^317491220 is an apocalyptic number.

It is an amenable number.

317491220 is an abundant number, since it is smaller than the sum of its proper divisors (349984204).

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

317491220 is a wasteful number, since it uses less digits than its factorization.

317491220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17719 (or 17717 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 317491220 is about 17818.2833067611. The cubic root of 317491220 is about 682.1982063661.

The spelling of 317491220 in words is "three hundred seventeen million, four hundred ninety-one thousand, two hundred twenty".