331303320 has 96 divisors (see below), whose sum is σ = 1086742800. Its totient is φ = 87526656.

The previous prime is 331303283. The next prime is 331303367. The reversal of 331303320 is 23303133.

331303320 is a `hidden beast` number, since 331 + 3 + 0 + 332 + 0 = 666.

331303320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 331303293 and 331303302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35019 + ... + 43461.

Almost surely, 2^331303320 is an apocalyptic number.

331303320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331303320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543371400).

331303320 is an abundant number, since it is smaller than the sum of its proper divisors (755439480).

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

331303320 is a wasteful number, since it uses less digits than its factorization.

331303320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8569 (or 8562 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 18.

The square root of 331303320 is about 18201.7394773137. The cubic root of 331303320 is about 691.9508747022.

Adding to 331303320 its reverse (23303133), we get a palindrome (354606453).

The spelling of 331303320 in words is "three hundred thirty-one million, three hundred three thousand, three hundred twenty".