317371621 has 8 divisors (see below), whose sum is σ = 375217920. Its totient is φ = 262652208.

The previous prime is 317371601. The next prime is 317371627. The reversal of 317371621 is 126173713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-317371621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317371627) 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, 781501 + ... + 781906.

It is an arithmetic number, because the mean of its divisors is an integer number (46902240).

Almost surely, 2^317371621 is an apocalyptic number.

It is an amenable number.

317371621 is a deficient number, since it is larger than the sum of its proper divisors (57846299).

317371621 is a wasteful number, since it uses less digits than its factorization.

317371621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563443.

The product of its digits is 5292, while the sum is 31.

The square root of 317371621 is about 17814.9269153707. The cubic root of 317371621 is about 682.1125342118.

The spelling of 317371621 in words is "three hundred seventeen million, three hundred seventy-one thousand, six hundred twenty-one".