331989133 has 8 divisors (see below), whose sum is σ = 381404160. Its totient is φ = 283071120.

The previous prime is 331989083. The next prime is 331989139.

331989133 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 331989133 - 2⁹ = 331988621 is a prime.

It is a super-2 number, since 2×331989133² = 220433568860183378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331989139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122818 + ... + 125491.

It is an arithmetic number, because the mean of its divisors is an integer number (47675520).

Almost surely, 2^331989133 is an apocalyptic number.

It is an amenable number.

331989133 is a deficient number, since it is larger than the sum of its proper divisors (49415027).

331989133 is a wasteful number, since it uses less digits than its factorization.

331989133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248507.

The product of its digits is 52488, while the sum is 40.

The square root of 331989133 is about 18220.5689537950. The cubic root of 331989133 is about 692.4280022634.

The spelling of 331989133 in words is "three hundred thirty-one million, nine hundred eighty-nine thousand, one hundred thirty-three".