331320020220 has 240 divisors, whose sum is σ = 1192370876928. Its totient is φ = 75441663360.

The previous prime is 331320020203. The next prime is 331320020267. The reversal of 331320020220 is 22020023133.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 331320020193 and 331320020202.

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 2926875 + ... + 3037965.

Almost surely, 2^331320020220 is an apocalyptic number.

331320020220 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 331320020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596185438464).

331320020220 is an abundant number, since it is smaller than the sum of its proper divisors (861050856708).

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

331320020220 is a wasteful number, since it uses less digits than its factorization.

331320020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111382 (or 111371 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 331320020220 its reverse (22020023133), we get a palindrome (353340043353).

The spelling of 331320020220 in words is "three hundred thirty-one billion, three hundred twenty million, twenty thousand, two hundred twenty".