318212112 has 80 divisors (see below), whose sum is σ = 841374720. Its totient is φ = 103603200.

The previous prime is 318212101. The next prime is 318212129. The reversal of 318212112 is 211212813.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558964 + ... + 559532.

It is an arithmetic number, because the mean of its divisors is an integer number (10517184).

Almost surely, 2^318212112 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 318212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420687360).

318212112 is an abundant number, since it is smaller than the sum of its proper divisors (523162608).

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

318212112 is a wasteful number, since it uses less digits than its factorization.

318212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 826 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

The square root of 318212112 is about 17838.5008338705. The cubic root of 318212112 is about 682.7141465966.

Adding to 318212112 its reverse (211212813), we get a palindrome (529424925).

It can be divided in two parts, 31821 and 2112, that added together give a palindrome (33933).

The spelling of 318212112 in words is "three hundred eighteen million, two hundred twelve thousand, one hundred twelve".