317953513920 has 112 divisors (see below), whose sum is σ = 1153717060608. Its totient is φ = 72675087360.

The previous prime is 317953513897. The next prime is 317953513939. The reversal of 317953513920 is 29315359713.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 317953513920.

It is a congruent number.

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, 23650536 + ... + 23663975.

It is an arithmetic number, because the mean of its divisors is an integer number (10301045184).

Almost surely, 2^317953513920 is an apocalyptic number.

317953513920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

317953513920 is an abundant number, since it is smaller than the sum of its proper divisors (835763546688).

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

317953513920 is a wasteful number, since it uses less digits than its factorization.

317953513920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47314538 (or 47314528 counting only the distinct ones).

The product of its (nonzero) digits is 765450, while the sum is 48.

The spelling of 317953513920 in words is "three hundred seventeen billion, nine hundred fifty-three million, five hundred thirteen thousand, nine hundred twenty".