231172 has 6 divisors (see below), whose sum is σ = 404558. Its totient is φ = 115584.

The previous prime is 231169. The next prime is 231197. The reversal of 231172 is 271132.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 215296 + 15876 = 464^2 + 126^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28893 + ... + 28900.

2²³¹¹⁷² is an apocalyptic number.

It is an amenable number.

231172 is a deficient number, since it is larger than the sum of its proper divisors (173386).

231172 is a wasteful number, since it uses less digits than its factorization.

231172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57797 (or 57795 counting only the distinct ones).

The product of its digits is 84, while the sum is 16.

The square root of 231172 is about 480.8034941637. The cubic root of 231172 is about 61.3731494251.

The spelling of 231172 in words is "two hundred thirty-one thousand, one hundred seventy-two".