331504204220 has 48 divisors (see below), whose sum is σ = 797889892800. Its totient is φ = 113332898304.

The previous prime is 331504204201. The next prime is 331504204223. The reversal of 331504204220 is 22402405133.

It is a self number, because there is not a number n which added to its sum of digits gives 331504204220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331504204223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3343529 + ... + 3441248.

It is an arithmetic number, because the mean of its divisors is an integer number (16622706100).

Almost surely, 2^331504204220 is an apocalyptic number.

It is an amenable number.

331504204220 is an abundant number, since it is smaller than the sum of its proper divisors (466385688580).

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

331504204220 is a wasteful number, since it uses less digits than its factorization.

331504204220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785142 (or 6785140 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 331504204220 its reverse (22402405133), we get a palindrome (353906609353).

The spelling of 331504204220 in words is "three hundred thirty-one billion, five hundred four million, two hundred four thousand, two hundred twenty".