231889 has 8 divisors (see below), whose sum is σ = 267968. Its totient is φ = 196560.

The previous prime is 231877. The next prime is 231893. The reversal of 231889 is 988132.

231889 is nontrivially palindromic in base 13.

231889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 231889 - 2¹¹ = 229841 is a prime.

It is a Duffinian number.

231889 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 231889.

It is not an unprimeable number, because it can be changed into a prime (231809) 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, 994 + ... + 1204.

It is an arithmetic number, because the mean of its divisors is an integer number (33496).

2²³¹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

231889 is a deficient number, since it is larger than the sum of its proper divisors (36079).

231889 is a wasteful number, since it uses less digits than its factorization.

231889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375.

The product of its digits is 3456, while the sum is 31.

The square root of 231889 is about 481.5485437627. The cubic root of 231889 is about 61.4365353192.

The spelling of 231889 in words is "two hundred thirty-one thousand, eight hundred eighty-nine".