331189 has 4 divisors (see below), whose sum is σ = 348640. Its totient is φ = 313740.

The previous prime is 331183. The next prime is 331207. The reversal of 331189 is 981133.

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 a cyclic number.

It is not a de Polignac number, because 331189 - 2¹³ = 322997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331183) 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, 8697 + ... + 8734.

It is an arithmetic number, because the mean of its divisors is an integer number (87160).

2³³¹¹⁸⁹ is an apocalyptic number.

It is an amenable number.

331189 is a deficient number, since it is larger than the sum of its proper divisors (17451).

331189 is a wasteful number, since it uses less digits than its factorization.

331189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17450.

The product of its digits is 648, while the sum is 25.

The square root of 331189 is about 575.4902258075. The cubic root of 331189 is about 69.1871277025.

The spelling of 331189 in words is "three hundred thirty-one thousand, one hundred eighty-nine".