131889 has 4 divisors (see below), whose sum is σ = 175856. Its totient is φ = 87924.

The previous prime is 131861. The next prime is 131891. The reversal of 131889 is 988131.

131889 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131889 - 2¹¹ = 129841 is a prime.

It is a D-number.

It is a Duffinian number.

131889 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (131839) 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, 21979 + ... + 21984.

It is an arithmetic number, because the mean of its divisors is an integer number (43964).

2¹³¹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

131889 is a deficient number, since it is larger than the sum of its proper divisors (43967).

131889 is an equidigital number, since it uses as much as digits as its factorization.

131889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43966.

The product of its digits is 1728, while the sum is 30.

The square root of 131889 is about 363.1652516417. The cubic root of 131889 is about 50.9021576636.

The spelling of 131889 in words is "one hundred thirty-one thousand, eight hundred eighty-nine".