231004172 has 24 divisors (see below), whose sum is σ = 474497184. Its totient is φ = 96325632.

The previous prime is 231004153. The next prime is 231004181. The reversal of 231004172 is 271400132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110453 + ... + 112524.

It is an arithmetic number, because the mean of its divisors is an integer number (19770716).

Almost surely, 2^231004172 is an apocalyptic number.

It is an amenable number.

231004172 is an abundant number, since it is smaller than the sum of its proper divisors (243493012).

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

231004172 is a wasteful number, since it uses less digits than its factorization.

231004172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223025 (or 223023 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 231004172 is about 15198.8214016745. The cubic root of 231004172 is about 613.5829378150.

It can be divided in two parts, 23100 and 4172, that added together give a palindrome (27272).

The spelling of 231004172 in words is "two hundred thirty-one million, four thousand, one hundred seventy-two".