331231133232220 has 96 divisors (see below), whose sum is σ = 769347177984000. Its totient is φ = 118993831363584.

The previous prime is 331231133232217. The next prime is 331231133232229. The reversal of 331231133232220 is 22232331132133.

It is a super-2 number, since 2×331231133232220² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331231133232229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1046488146 + ... + 1046804614.

It is an arithmetic number, because the mean of its divisors is an integer number (8014033104000).

Almost surely, 2^{331231133232220} is an apocalyptic number.

It is an amenable number.

331231133232220 is an abundant number, since it is smaller than the sum of its proper divisors (438116044751780).

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

331231133232220 is a wasteful number, since it uses less digits than its factorization.

331231133232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425327 (or 425325 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 331231133232220 its reverse (22232331132133), we get a palindrome (353463464364353).

The spelling of 331231133232220 in words is "three hundred thirty-one trillion, two hundred thirty-one billion, one hundred thirty-three million, two hundred thirty-two thousand, two hundred twenty".