331660000 has 240 divisors, whose sum is σ = 982485504. Its totient is φ = 107712000.

The previous prime is 331659997. The next prime is 331660001. The reversal of 331660000 is 66133.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 331660000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331660001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3219949 + ... + 3220051.

Almost surely, 2^331660000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491242752).

331660000 is an abundant number, since it is smaller than the sum of its proper divisors (650825504).

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

331660000 is a wasteful number, since it uses less digits than its factorization.

331660000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 331660000 is about 18211.5348062704. The cubic root of 331660000 is about 692.1991029432.

The spelling of 331660000 in words is "three hundred thirty-one million, six hundred sixty thousand".