189031 has 4 divisors (see below), whose sum is σ = 199000. Its totient is φ = 179064.

The previous prime is 189019. The next prime is 189041. The reversal of 189031 is 130981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189031 - 2⁵ = 188999 is a prime.

It is a super-2 number, since 2×189031² = 71465437922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188993 and 189011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4956 + ... + 4993.

It is an arithmetic number, because the mean of its divisors is an integer number (49750).

2¹⁸⁹⁰³¹ is an apocalyptic number.

189031 is a deficient number, since it is larger than the sum of its proper divisors (9969).

189031 is an equidigital number, since it uses as much as digits as its factorization.

189031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 189031 is about 434.7769543111. The cubic root of 189031 is about 57.3910729236.

The spelling of 189031 in words is "one hundred eighty-nine thousand, thirty-one".