317210240 has 64 divisors (see below), whose sum is σ = 766989000. Its totient is φ = 125435904.

The previous prime is 317210239. The next prime is 317210249. The reversal of 317210240 is 42012713.

It can be written as a sum of positive squares in 4 ways, for example, as 153165376 + 164044864 = 12376^2 + 12808^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317210249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54176 + ... + 59744.

Almost surely, 2^317210240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 317210240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383494500).

317210240 is an abundant number, since it is smaller than the sum of its proper divisors (449778760).

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

317210240 is an equidigital number, since it uses as much as digits as its factorization.

317210240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5677 (or 5665 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 317210240 is about 17810.3969635716. The cubic root of 317210240 is about 681.9968983040.

Adding to 317210240 its reverse (42012713), we get a palindrome (359222953).

The spelling of 317210240 in words is "three hundred seventeen million, two hundred ten thousand, two hundred forty".