318813372 has 18 divisors (see below), whose sum is σ = 805889448. Its totient is φ = 106271112.

The previous prime is 318813371. The next prime is 318813377. The reversal of 318813372 is 273318813.

318813372 is a `hidden beast` number, since 318 + 8 + 1 + 337 + 2 = 666.

318813372 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 8855927 = 318813372 / (3 + 1 + 8 + 8 + 1 + 3 + 3 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318813371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4427928 + ... + 4427999.

It is an arithmetic number, because the mean of its divisors is an integer number (44771636).

Almost surely, 2^318813372 is an apocalyptic number.

It is an amenable number.

318813372 is an abundant number, since it is smaller than the sum of its proper divisors (487076076).

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

318813372 is a wasteful number, since it uses less digits than its factorization.

318813372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8855937 (or 8855932 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 318813372 is about 17855.3457541432. The cubic root of 318813372 is about 683.1438709059.

It can be divided in two parts, 31881 and 3372, that added together give a palindrome (35253).

The spelling of 318813372 in words is "three hundred eighteen million, eight hundred thirteen thousand, three hundred seventy-two".