318811212 has 18 divisors (see below), whose sum is σ = 805883988. Its totient is φ = 106270392.

The previous prime is 318811201. The next prime is 318811243. The reversal of 318811212 is 212118813.

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4427898 + ... + 4427969.

Almost surely, 2^318811212 is an apocalyptic number.

It is an amenable number.

318811212 is an abundant number, since it is smaller than the sum of its proper divisors (487072776).

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

318811212 is a wasteful number, since it uses less digits than its factorization.

318811212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8855877 (or 8855872 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 318811212 is about 17855.2852679536. The cubic root of 318811212 is about 683.1423281077.

It can be divided in two parts, 3188 and 11212, that added together give a square (14400 = 120²).

The spelling of 318811212 in words is "three hundred eighteen million, eight hundred eleven thousand, two hundred twelve".