313103240 has 32 divisors (see below), whose sum is σ = 716036760. Its totient is φ = 123187200.

The previous prime is 313103239. The next prime is 313103243. The reversal of 313103240 is 42301313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 139759684 + 173343556 = 11822^2 + 13166^2 .

It is not an unprimeable number, because it can be changed into a prime (313103243) 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, 61721 + ... + 66600.

Almost surely, 2^313103240 is an apocalyptic number.

It is an amenable number.

313103240 is an abundant number, since it is smaller than the sum of its proper divisors (402933520).

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

313103240 is a wasteful number, since it uses less digits than its factorization.

313103240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128393 (or 128389 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 313103240 is about 17694.7235073058. The cubic root of 313103240 is about 679.0407755587.

Adding to 313103240 its reverse (42301313), we get a palindrome (355404553).

The spelling of 313103240 in words is "three hundred thirteen million, one hundred three thousand, two hundred forty".