331220032 has 56 divisors (see below), whose sum is σ = 772192512. Its totient is φ = 138969600.

The previous prime is 331220023. The next prime is 331220059. The reversal of 331220032 is 230022133.

331220032 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 (16).

It is a junction number, because it is equal to n+sod(n) for n = 331219988 and 331220015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8944 + ... + 27247.

It is an arithmetic number, because the mean of its divisors is an integer number (13789152).

Almost surely, 2^331220032 is an apocalyptic number.

331220032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

331220032 is an abundant number, since it is smaller than the sum of its proper divisors (440972480).

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

331220032 is a wasteful number, since it uses less digits than its factorization.

331220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36227 (or 36217 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 331220032 is about 18199.4514203039. The cubic root of 331220032 is about 691.8928855111.

Adding to 331220032 its reverse (230022133), we get a palindrome (561242165).

The spelling of 331220032 in words is "three hundred thirty-one million, two hundred twenty thousand, thirty-two".