331666016 has 48 divisors (see below), whose sum is σ = 721405440. Its totient is φ = 148836480.

The previous prime is 331665979. The next prime is 331666031. The reversal of 331666016 is 610666133.

It is a super-2 number, since 2×331666016² = 220004692338624512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21845 + ... + 33771.

It is an arithmetic number, because the mean of its divisors is an integer number (15029280).

Almost surely, 2^331666016 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 331666016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360702720).

331666016 is an abundant number, since it is smaller than the sum of its proper divisors (389739424).

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

331666016 is a wasteful number, since it uses less digits than its factorization.

331666016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12027 (or 12019 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 331666016 is about 18211.6999755652. The cubic root of 331666016 is about 692.2032881978.

The spelling of 331666016 in words is "three hundred thirty-one million, six hundred sixty-six thousand, sixteen".