317986690 has 32 divisors (see below), whose sum is σ = 663917184. Its totient is φ = 107395200.

The previous prime is 317986687. The next prime is 317986699. The reversal of 317986690 is 96689713.

It is a super-2 number, since 2×317986690² = 202231070034312200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (317986699) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29211 + ... + 38590.

It is an arithmetic number, because the mean of its divisors is an integer number (20747412).

Almost surely, 2^317986690 is an apocalyptic number.

317986690 is an abundant number, since it is smaller than the sum of its proper divisors (345930494).

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

317986690 is a wasteful number, since it uses less digits than its factorization.

317986690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67882.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 317986690 is about 17832.1813023533. The cubic root of 317986690 is about 682.5528965608.

The spelling of 317986690 in words is "three hundred seventeen million, nine hundred eighty-six thousand, six hundred ninety".