317854985 has 16 divisors (see below), whose sum is σ = 436540800. Its totient is φ = 217645056.

The previous prime is 317854951. The next prime is 317854987. The reversal of 317854985 is 589458713.

It is a cyclic number.

It is not a de Polignac number, because 317854985 - 2²⁶ = 250746121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (317854987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19721 + ... + 32009.

It is an arithmetic number, because the mean of its divisors is an integer number (27283800).

Almost surely, 2^317854985 is an apocalyptic number.

317854985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

317854985 is a deficient number, since it is larger than the sum of its proper divisors (118685815).

317854985 is a wasteful number, since it uses less digits than its factorization.

317854985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13040.

The product of its digits is 1209600, while the sum is 50.

The square root of 317854985 is about 17828.4880177765. The cubic root of 317854985 is about 682.4586493842.

The spelling of 317854985 in words is "three hundred seventeen million, eight hundred fifty-four thousand, nine hundred eighty-five".