231888212 has 12 divisors (see below), whose sum is σ = 406078176. Its totient is φ = 115865880.

The previous prime is 231888203. The next prime is 231888227. The reversal of 231888212 is 212888132.

231888212 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12614 + ... + 24957.

It is an arithmetic number, because the mean of its divisors is an integer number (33839848).

Almost surely, 2^231888212 is an apocalyptic number.

It is an amenable number.

231888212 is a deficient number, since it is larger than the sum of its proper divisors (174189964).

231888212 is a wasteful number, since it uses less digits than its factorization.

231888212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39118 (or 39116 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 231888212 is about 15227.8761486952. The cubic root of 231888212 is about 614.3646572834.

The spelling of 231888212 in words is "two hundred thirty-one million, eight hundred eighty-eight thousand, two hundred twelve".