317142886 has 4 divisors (see below), whose sum is σ = 475714332. Its totient is φ = 158571442.

The previous prime is 317142827. The next prime is 317142901. The reversal of 317142886 is 688241713.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×317142886² = 201159220280817992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79285720 + ... + 79285723.

It is an arithmetic number, because the mean of its divisors is an integer number (118928583).

Almost surely, 2^317142886 is an apocalyptic number.

317142886 is a deficient number, since it is larger than the sum of its proper divisors (158571446).

317142886 is a wasteful number, since it uses less digits than its factorization.

317142886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158571445.

The product of its digits is 64512, while the sum is 40.

The square root of 317142886 is about 17808.5060013467. The cubic root of 317142886 is about 681.9486248828.

The spelling of 317142886 in words is "three hundred seventeen million, one hundred forty-two thousand, eight hundred eighty-six".