317888139 has 4 divisors (see below), whose sum is σ = 423850856. Its totient is φ = 211925424.

The previous prime is 317888113. The next prime is 317888143. The reversal of 317888139 is 931888713.

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

It is not a de Polignac number, because 317888139 - 2¹¹ = 317886091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317888159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52981354 + ... + 52981359.

It is an arithmetic number, because the mean of its divisors is an integer number (105962714).

Almost surely, 2^317888139 is an apocalyptic number.

317888139 is a deficient number, since it is larger than the sum of its proper divisors (105962717).

317888139 is a wasteful number, since it uses less digits than its factorization.

317888139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105962716.

The product of its digits is 290304, while the sum is 48.

The square root of 317888139 is about 17829.4177975614. The cubic root of 317888139 is about 682.4823766062.

The spelling of 317888139 in words is "three hundred seventeen million, eight hundred eighty-eight thousand, one hundred thirty-nine".