331089388 has 12 divisors (see below), whose sum is σ = 662178832. Its totient is φ = 141895440.

The previous prime is 331089373. The next prime is 331089389. The reversal of 331089388 is 883980133.

It is a happy number.

331089388 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (331089389) 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, 5912283 + ... + 5912338.

Almost surely, 2^331089388 is an apocalyptic number.

It is an amenable number.

331089388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331089388 is a wasteful number, since it uses less digits than its factorization.

331089388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11824632 (or 11824630 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 331089388 is about 18195.8618372420. The cubic root of 331089388 is about 691.8019051633.

The spelling of 331089388 in words is "three hundred thirty-one million, eighty-nine thousand, three hundred eighty-eight".