317531140 has 24 divisors (see below), whose sum is σ = 688326912. Its totient is φ = 122915040.

The previous prime is 317531113. The next prime is 317531141. The reversal of 317531140 is 41135713.

It is not an unprimeable number, because it can be changed into a prime (317531141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255454 + ... + 256693.

It is an arithmetic number, because the mean of its divisors is an integer number (28680288).

Almost surely, 2^317531140 is an apocalyptic number.

It is an amenable number.

317531140 is an abundant number, since it is smaller than the sum of its proper divisors (370795772).

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

317531140 is a wasteful number, since it uses less digits than its factorization.

317531140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512187 (or 512185 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 317531140 is about 17819.4034692523. The cubic root of 317531140 is about 682.2267974046.

Adding to 317531140 its reverse (41135713), we get a palindrome (358666853).

The spelling of 317531140 in words is "three hundred seventeen million, five hundred thirty-one thousand, one hundred forty".