331120220 has 48 divisors (see below), whose sum is σ = 775020960. Its totient is φ = 118093824.

The previous prime is 331120219. The next prime is 331120241. The reversal of 331120220 is 22021133.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 331120195 and 331120204.

It is a congruent number.

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, 19169 + ... + 32088.

It is an arithmetic number, because the mean of its divisors is an integer number (16146270).

Almost surely, 2^331120220 is an apocalyptic number.

It is an amenable number.

331120220 is an abundant number, since it is smaller than the sum of its proper divisors (443900740).

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

331120220 is a wasteful number, since it uses less digits than its factorization.

331120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51302 (or 51300 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 331120220 is about 18196.7090431210. The cubic root of 331120220 is about 691.8233786938.

Adding to 331120220 its reverse (22021133), we get a palindrome (353141353).

The spelling of 331120220 in words is "three hundred thirty-one million, one hundred twenty thousand, two hundred twenty".