331989135 has 32 divisors (see below), whose sum is σ = 541080000. Its totient is φ = 173792256.

The previous prime is 331989083. The next prime is 331989139. The reversal of 331989135 is 531989133.

It is a happy number.

It is not a de Polignac number, because 331989135 - 2⁹ = 331988623 is a prime.

It is a super-2 number, since 2×331989135² = 220433571516096450, which contains 22 as substring.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198081 + ... + 199749.

It is an arithmetic number, because the mean of its divisors is an integer number (16908750).

Almost surely, 2^331989135 is an apocalyptic number.

331989135 is a deficient number, since it is larger than the sum of its proper divisors (209090865).

331989135 is a wasteful number, since it uses less digits than its factorization.

331989135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915.

The product of its digits is 87480, while the sum is 42.

The square root of 331989135 is about 18220.5690086781. The cubic root of 331989135 is about 692.4280036539.

The spelling of 331989135 in words is "three hundred thirty-one million, nine hundred eighty-nine thousand, one hundred thirty-five".