313140440 has 16 divisors (see below), whose sum is σ = 704566080. Its totient is φ = 125256160.

The previous prime is 313140431. The next prime is 313140449. The reversal of 313140440 is 44041313.

It is a happy number.

313140440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (313140431) and next prime (313140449).

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 (313140449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3914216 + ... + 3914295.

It is an arithmetic number, because the mean of its divisors is an integer number (44035380).

Almost surely, 2^313140440 is an apocalyptic number.

It is an amenable number.

313140440 is an abundant number, since it is smaller than the sum of its proper divisors (391425640).

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

313140440 is a wasteful number, since it uses less digits than its factorization.

313140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828522 (or 7828518 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 313140440 is about 17695.7746369013. The cubic root of 313140440 is about 679.0676669195.

Adding to 313140440 its reverse (44041313), we get a palindrome (357181753).

The spelling of 313140440 in words is "three hundred thirteen million, one hundred forty thousand, four hundred forty".