331038320 has 20 divisors (see below), whose sum is σ = 769664280. Its totient is φ = 132415296.

The previous prime is 331038319. The next prime is 331038403. The reversal of 331038320 is 23830133.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068910 + ... + 2069069.

It is an arithmetic number, because the mean of its divisors is an integer number (38483214).

Almost surely, 2^331038320 is an apocalyptic number.

It is an amenable number.

331038320 is an abundant number, since it is smaller than the sum of its proper divisors (438625960).

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

331038320 is a wasteful number, since it uses less digits than its factorization.

331038320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137992 (or 4137986 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 331038320 is about 18194.4584970260. The cubic root of 331038320 is about 691.7663349542.

Adding to 331038320 its reverse (23830133), we get a palindrome (354868453).

The spelling of 331038320 in words is "three hundred thirty-one million, thirty-eight thousand, three hundred twenty".