331989141 has 32 divisors (see below), whose sum is σ = 515922048. Its totient is φ = 187658240.

The previous prime is 331989139. The next prime is 331989157. The reversal of 331989141 is 141989133.

It is a happy number.

It is not a de Polignac number, because 331989141 - 2¹ = 331989139 is a prime.

It is a super-2 number, since 2×331989141² = 220433579483835762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331989141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331989241) 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 31 ways as a sum of consecutive naturals, for example, 60775 + ... + 66011.

It is an arithmetic number, because the mean of its divisors is an integer number (16122564).

Almost surely, 2^331989141 is an apocalyptic number.

It is an amenable number.

331989141 is a deficient number, since it is larger than the sum of its proper divisors (183932907).

331989141 is a wasteful number, since it uses less digits than its factorization.

331989141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381.

The product of its digits is 23328, while the sum is 39.

The square root of 331989141 is about 18220.5691733272. The cubic root of 331989141 is about 692.4280078253.

The spelling of 331989141 in words is "three hundred thirty-one million, nine hundred eighty-nine thousand, one hundred forty-one".