231605612 has 24 divisors (see below), whose sum is σ = 466287360. Its totient is φ = 98600400.

The previous prime is 231605599. The next prime is 231605617. The reversal of 231605612 is 216506132.

231605612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231605617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23162 + ... + 31617.

It is an arithmetic number, because the mean of its divisors is an integer number (19428640).

Almost surely, 2^231605612 is an apocalyptic number.

It is an amenable number.

231605612 is an abundant number, since it is smaller than the sum of its proper divisors (234681748).

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

231605612 is a wasteful number, since it uses less digits than its factorization.

231605612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54941 (or 54939 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 231605612 is about 15218.5942846243. The cubic root of 231605612 is about 614.1149823389.

The spelling of 231605612 in words is "two hundred thirty-one million, six hundred five thousand, six hundred twelve".