2321312112 has 60 divisors (see below), whose sum is σ = 7424517360. Its totient is φ = 663231744.

The previous prime is 2321312101. The next prime is 2321312167. The reversal of 2321312112 is 2112131232.

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 11 ways as a sum of consecutive naturals, for example, 1150437 + ... + 1152452.

It is an arithmetic number, because the mean of its divisors is an integer number (123741956).

Almost surely, 2^2321312112 is an apocalyptic number.

It is an amenable number.

2321312112 is an abundant number, since it is smaller than the sum of its proper divisors (5103205248).

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

2321312112 is a wasteful number, since it uses less digits than its factorization.

2321312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302910 (or 2302901 counting only the distinct ones).

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

The square root of 2321312112 is about 48179.9970112079. The cubic root of 2321312112 is about 1324.0707117761.

Adding to 2321312112 its reverse (2112131232), we get a palindrome (4433443344).

The spelling of 2321312112 in words is "two billion, three hundred twenty-one million, three hundred twelve thousand, one hundred twelve".