317505521072 has 40 divisors (see below), whose sum is σ = 618260238336. Its totient is φ = 157955363136.

The previous prime is 317505521029. The next prime is 317505521087. The reversal of 317505521072 is 270125505713.

It is a happy number.

It is a super-2 number, since 2×317505521072² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6013733 + ... + 6066299.

Almost surely, 2^317505521072 is an apocalyptic number.

It is an amenable number.

317505521072 is a deficient number, since it is larger than the sum of its proper divisors (300754717264).

317505521072 is a wasteful number, since it uses less digits than its factorization.

317505521072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54465 (or 54459 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 38.

The spelling of 317505521072 in words is "three hundred seventeen billion, five hundred five million, five hundred twenty-one thousand, seventy-two".