317985670 has 16 divisors (see below), whose sum is σ = 572577408. Its totient is φ = 127149120.

The previous prime is 317985643. The next prime is 317985683. The reversal of 317985670 is 76589713.

It is a super-2 number, since 2×317985670² = 202229772650697800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 317985670.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51130 + ... + 57010.

It is an arithmetic number, because the mean of its divisors is an integer number (35786088).

Almost surely, 2^317985670 is an apocalyptic number.

317985670 is a deficient number, since it is larger than the sum of its proper divisors (254591738).

317985670 is a wasteful number, since it uses less digits than its factorization.

317985670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11295.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 317985670 is about 17832.1527023520. The cubic root of 317985670 is about 682.5521667559.

The spelling of 317985670 in words is "three hundred seventeen million, nine hundred eighty-five thousand, six hundred seventy".