313242140 has 12 divisors (see below), whose sum is σ = 657808536. Its totient is φ = 125296848.

The previous prime is 313242133. The next prime is 313242157. The reversal of 313242140 is 41242313.

313242140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 15662107 = 313242140 / (3 + 1 + 3 + 2 + 4 + 2 + 1 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7831034 + ... + 7831073.

It is an arithmetic number, because the mean of its divisors is an integer number (54817378).

Almost surely, 2^313242140 is an apocalyptic number.

It is an amenable number.

313242140 is an abundant number, since it is smaller than the sum of its proper divisors (344566396).

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

313242140 is a wasteful number, since it uses less digits than its factorization.

313242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662116 (or 15662114 counting only the distinct ones).

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

The square root of 313242140 is about 17698.6479709609. The cubic root of 313242140 is about 679.1411735614.

Adding to 313242140 its reverse (41242313), we get a palindrome (354484453).

The spelling of 313242140 in words is "three hundred thirteen million, two hundred forty-two thousand, one hundred forty".