2231312112 has 30 divisors (see below), whose sum is σ = 6244575272. Its totient is φ = 743770656.

The previous prime is 2231312089. The next prime is 2231312123. The reversal of 2231312112 is 2112131322.

It is a super-3 number, since 3×2231312112³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

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, 7747468 + ... + 7747755.

Almost surely, 2^2231312112 is an apocalyptic number.

It is an amenable number.

2231312112 is an abundant number, since it is smaller than the sum of its proper divisors (4013263160).

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

2231312112 is a wasteful number, since it uses less digits than its factorization.

2231312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15495237 (or 15495228 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2231312112 is about 47236.7665277800. The cubic root of 2231312112 is about 1306.7327456286.

Adding to 2231312112 its reverse (2112131322), we get a palindrome (4343443434).

The spelling of 2231312112 in words is "two billion, two hundred thirty-one million, three hundred twelve thousand, one hundred twelve".