317319920 has 40 divisors (see below), whose sum is σ = 739171440. Its totient is φ = 126686720.

The previous prime is 317319913. The next prime is 317319929. The reversal of 317319920 is 29913713.

317319920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317319929) 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, 42035 + ... + 49005.

It is an arithmetic number, because the mean of its divisors is an integer number (18479286).

Almost surely, 2^317319920 is an apocalyptic number.

It is an amenable number.

317319920 is an abundant number, since it is smaller than the sum of its proper divisors (421851520).

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

317319920 is a wasteful number, since it uses less digits than its factorization.

317319920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7553 (or 7547 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 317319920 is about 17813.4757978335. The cubic root of 317319920 is about 682.0754926565.

The spelling of 317319920 in words is "three hundred seventeen million, three hundred nineteen thousand, nine hundred twenty".