318812112 has 90 divisors (see below), whose sum is σ = 926805698. Its totient is φ = 106235712.

The previous prime is 318812111. The next prime is 318812113. The reversal of 318812112 is 211218813.

It is an interprime number because it is at equal distance from previous prime (318812111) and next prime (318812113).

It can be written as a sum of positive squares in only one way, i.e., 306110016 + 12702096 = 17496^2 + 3564^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318812111) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 103458 + ... + 106494.

Almost surely, 2^318812112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318812112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463402849).

318812112 is an abundant number, since it is smaller than the sum of its proper divisors (607993586).

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

318812112 is an frugal number, since it uses more digits than its factorization.

318812112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3069 (or 3042 counting only the distinct ones).

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

The square root of 318812112 is about 17855.3104705575. The cubic root of 318812112 is about 683.1429709412.

The spelling of 318812112 in words is "three hundred eighteen million, eight hundred twelve thousand, one hundred twelve".