317385216 has 120 divisors (see below), whose sum is σ = 950293344. Its totient is φ = 105753600.

The previous prime is 317385209. The next prime is 317385217. The reversal of 317385216 is 612583713.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (317385217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123141 + ... + 125691.

Almost surely, 2^317385216 is an apocalyptic number.

317385216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 317385216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475146672).

317385216 is an abundant number, since it is smaller than the sum of its proper divisors (632908128).

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

317385216 is an frugal number, since it uses more digits than its factorization.

317385216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2556 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 317385216 is about 17815.3084733327. The cubic root of 317385216 is about 682.1222737798.

The spelling of 317385216 in words is "three hundred seventeen million, three hundred eighty-five thousand, two hundred sixteen".