231105212252 has 24 divisors (see below), whose sum is σ = 405071713200. Its totient is φ = 115370551296.

The previous prime is 231105212251. The next prime is 231105212291. The reversal of 231105212252 is 252212501132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231105212251) 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, 9226898 + ... + 9251910.

It is an arithmetic number, because the mean of its divisors is an integer number (16877988050).

Almost surely, 2^231105212252 is an apocalyptic number.

It is an amenable number.

231105212252 is a deficient number, since it is larger than the sum of its proper divisors (173966500948).

231105212252 is a wasteful number, since it uses less digits than its factorization.

231105212252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28565 (or 28563 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 231105212252 its reverse (252212501132), we get a palindrome (483317713384).

The spelling of 231105212252 in words is "two hundred thirty-one billion, one hundred five million, two hundred twelve thousand, two hundred fifty-two".