317240 has 64 divisors (see below), whose sum is σ = 898560. Its totient is φ = 97920.

The previous prime is 317227. The next prime is 317257. The reversal of 317240 is 42713.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3029 + ... + 3131.

It is an arithmetic number, because the mean of its divisors is an integer number (14040).

2³¹⁷²⁴⁰ 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 317240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449280).

317240 is an abundant number, since it is smaller than the sum of its proper divisors (581320).

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

317240 is a wasteful number, since it uses less digits than its factorization.

317240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 317240 is about 563.2406235349. The cubic root of 317240 is about 68.2018225477.

Adding to 317240 its reverse (42713), we get a palindrome (359953).

The spelling of 317240 in words is "three hundred seventeen thousand, two hundred forty", and thus it is an iban number.