313440040 has 32 divisors (see below), whose sum is σ = 706907880. Its totient is φ = 125079552.

The previous prime is 313440031. The next prime is 313440047. The reversal of 313440040 is 40044313.

It can be written as a sum of positive squares in 4 ways, for example, as 123165604 + 190274436 = 11098^2 + 13794^2 .

It is not an unprimeable number, because it can be changed into a prime (313440047) 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, 8272 + ... + 26368.

Almost surely, 2^313440040 is an apocalyptic number.

It is an amenable number.

313440040 is an abundant number, since it is smaller than the sum of its proper divisors (393467840).

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

313440040 is a wasteful number, since it uses less digits than its factorization.

313440040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18541 (or 18537 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 313440040 is about 17704.2379107376. The cubic root of 313440040 is about 679.2841659698.

Adding to 313440040 its reverse (40044313), we get a palindrome (353484353).

The spelling of 313440040 in words is "three hundred thirteen million, four hundred forty thousand, forty".