231105172 has 12 divisors (see below), whose sum is σ = 404540640. Its totient is φ = 115522136.

The previous prime is 231105169. The next prime is 231105187. The reversal of 231105172 is 271501132.

It is a happy number.

231105172 is digitally balanced in base 3, 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24729 + ... + 32767.

It is an arithmetic number, because the mean of its divisors is an integer number (33711720).

Almost surely, 2^231105172 is an apocalyptic number.

It is an amenable number.

231105172 is a deficient number, since it is larger than the sum of its proper divisors (173435468).

231105172 is a wasteful number, since it uses less digits than its factorization.

231105172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15230 (or 15228 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 231105172 is about 15202.1436646284. The cubic root of 231105172 is about 613.6723486779.

It can be divided in two parts, 23110 and 5172, that added together give a palindrome (28282).

The spelling of 231105172 in words is "two hundred thirty-one million, one hundred five thousand, one hundred seventy-two".