189231 has 8 divisors (see below), whose sum is σ = 288384. Its totient is φ = 108120.

The previous prime is 189229. The next prime is 189239. The reversal of 189231 is 132981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189231 - 2¹ = 189229 is a prime.

It is a super-2 number, since 2×189231² = 71616742722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4485 + ... + 4526.

It is an arithmetic number, because the mean of its divisors is an integer number (36048).

2¹⁸⁹²³¹ is an apocalyptic number.

189231 is a deficient number, since it is larger than the sum of its proper divisors (99153).

189231 is an equidigital number, since it uses as much as digits as its factorization.

189231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9021.

The product of its digits is 432, while the sum is 24.

The square root of 189231 is about 435.0068964971. The cubic root of 189231 is about 57.4113062344.

The spelling of 189231 in words is "one hundred eighty-nine thousand, two hundred thirty-one".