331392288 has 96 divisors (see below), whose sum is σ = 925888320. Its totient is φ = 103424000.

The previous prime is 331392277. The next prime is 331392293. The reversal of 331392288 is 882293133.

331392288 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409228 + ... + 410036.

It is an arithmetic number, because the mean of its divisors is an integer number (9644670).

Almost surely, 2^331392288 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 331392288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462944160).

331392288 is an abundant number, since it is smaller than the sum of its proper divisors (594496032).

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

331392288 is a wasteful number, since it uses less digits than its factorization.

331392288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090 (or 1082 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 331392288 is about 18204.1832555048. The cubic root of 331392288 is about 692.0128078532.

The spelling of 331392288 in words is "three hundred thirty-one million, three hundred ninety-two thousand, two hundred eighty-eight".