331113323220 has 96 divisors (see below), whose sum is σ = 935047048320. Its totient is φ = 87542906880.

The previous prime is 331113323213. The next prime is 331113323257. The reversal of 331113323220 is 22323311133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8855284 + ... + 8892596.

It is an arithmetic number, because the mean of its divisors is an integer number (9740073420).

Almost surely, 2^331113323220 is an apocalyptic number.

331113323220 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 331113323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467523524160).

331113323220 is an abundant number, since it is smaller than the sum of its proper divisors (603933725100).

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

331113323220 is a wasteful number, since it uses less digits than its factorization.

331113323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38585 (or 38583 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 331113323220 its reverse (22323311133), we get a palindrome (353436634353).

The spelling of 331113323220 in words is "three hundred thirty-one billion, one hundred thirteen million, three hundred twenty-three thousand, two hundred twenty".