317887140 has 48 divisors (see below), whose sum is σ = 928787328. Its totient is φ = 81083904.

The previous prime is 317887133. The next prime is 317887153. The reversal of 317887140 is 41788713.

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 15 ways as a sum of consecutive naturals, for example, 113797 + ... + 116556.

It is an arithmetic number, because the mean of its divisors is an integer number (19349736).

Almost surely, 2^317887140 is an apocalyptic number.

317887140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

317887140 is an abundant number, since it is smaller than the sum of its proper divisors (610900188).

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

317887140 is a wasteful number, since it uses less digits than its factorization.

317887140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230388 (or 230386 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 317887140 is about 17829.3897820425. The cubic root of 317887140 is about 682.4816616790.

The spelling of 317887140 in words is "three hundred seventeen million, eight hundred eighty-seven thousand, one hundred forty".