231321112 has 16 divisors (see below), whose sum is σ = 473157000. Its totient is φ = 105145920.

The previous prime is 231321107. The next prime is 231321113. The reversal of 231321112 is 211123132.

231321112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314237 + ... + 1314412.

Almost surely, 2^231321112 is an apocalyptic number.

231321112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231321112 is an abundant number, since it is smaller than the sum of its proper divisors (241835888).

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

231321112 is a wasteful number, since it uses less digits than its factorization.

231321112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628666 (or 2628662 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 231321112 is about 15209.2442941785. The cubic root of 231321112 is about 613.8634235230.

Adding to 231321112 its reverse (211123132), we get a palindrome (442444244).

The spelling of 231321112 in words is "two hundred thirty-one million, three hundred twenty-one thousand, one hundred twelve".