231112012 has 12 divisors (see below), whose sum is σ = 412077456. Its totient is φ = 113375600.

The previous prime is 231112009. The next prime is 231112031. The reversal of 231112012 is 210211132.

231112012 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

231112012 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 231111983 and 231112001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544864 + ... + 545287.

It is an arithmetic number, because the mean of its divisors is an integer number (34339788).

Almost surely, 2^231112012 is an apocalyptic number.

It is an amenable number.

231112012 is a deficient number, since it is larger than the sum of its proper divisors (180965444).

231112012 is a wasteful number, since it uses less digits than its factorization.

231112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090208 (or 1090206 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 231112012 is about 15202.3686312364. The cubic root of 231112012 is about 613.6784028875.

Adding to 231112012 its reverse (210211132), we get a palindrome (441323144).

It can be divided in two parts, 2311120 and 12, that added together give a palindrome (2311132).

The spelling of 231112012 in words is "two hundred thirty-one million, one hundred twelve thousand, twelve".