331245320 has 64 divisors (see below), whose sum is σ = 864535680. Its totient is φ = 111868416.

The previous prime is 331245319. The next prime is 331245347. The reversal of 331245320 is 23542133.

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, 9932 + ... + 27588.

It is an arithmetic number, because the mean of its divisors is an integer number (13508370).

Almost surely, 2^331245320 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 331245320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432267840).

331245320 is an abundant number, since it is smaller than the sum of its proper divisors (533290360).

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

331245320 is a wasteful number, since it uses less digits than its factorization.

331245320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17742 (or 17738 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 331245320 is about 18200.1461532593. The cubic root of 331245320 is about 691.9104932848.

Adding to 331245320 its reverse (23542133), we get a palindrome (354787453).

The spelling of 331245320 in words is "three hundred thirty-one million, two hundred forty-five thousand, three hundred twenty".