331593216 has 80 divisors (see below), whose sum is σ = 898603200. Its totient is φ = 108627968.

The previous prime is 331593209. The next prime is 331593271. The reversal of 331593216 is 612395133.

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, 88795 + ... + 92453.

It is an arithmetic number, because the mean of its divisors is an integer number (11232540).

Almost surely, 2^331593216 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 331593216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449301600).

331593216 is an abundant number, since it is smaller than the sum of its proper divisors (567009984).

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

331593216 is an equidigital number, since it uses as much as digits as its factorization.

331593216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739 (or 3723 counting only the distinct ones).

The product of its digits is 14580, while the sum is 33.

The square root of 331593216 is about 18209.7011507603. The cubic root of 331593216 is about 692.1526387649.

The spelling of 331593216 in words is "three hundred thirty-one million, five hundred ninety-three thousand, two hundred sixteen".