313240 has 32 divisors (see below), whose sum is σ = 725760. Its totient is φ = 121600.

The previous prime is 313219. The next prime is 313241. The reversal of 313240 is 42313.

313240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 313240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313241) 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, 1545 + ... + 1735.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2³¹³²⁴⁰ 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 313240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362880).

313240 is an abundant number, since it is smaller than the sum of its proper divisors (412520).

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

313240 is a wasteful number, since it uses less digits than its factorization.

313240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 313240 is about 559.6784791289. The cubic root of 313240 is about 67.9139626978.

Adding to 313240 its reverse (42313), we get a palindrome (355553).

The spelling of 313240 in words is "three hundred thirteen thousand, two hundred forty".