331323333220 has 48 divisors (see below), whose sum is σ = 769722258816. Its totient is φ = 118784288000.

The previous prime is 331323333217. The next prime is 331323333239. The reversal of 331323333220 is 22333323133.

It is a super-2 number, since 2×331323333220² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10590121 + ... + 10621360.

It is an arithmetic number, because the mean of its divisors is an integer number (16035880392).

Almost surely, 2^331323333220 is an apocalyptic number.

It is an amenable number.

331323333220 is an abundant number, since it is smaller than the sum of its proper divisors (438398925596).

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

331323333220 is a wasteful number, since it uses less digits than its factorization.

331323333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21211572 (or 21211570 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 28.

Adding to 331323333220 its reverse (22333323133), we get a palindrome (353656656353).

The spelling of 331323333220 in words is "three hundred thirty-one billion, three hundred twenty-three million, three hundred thirty-three thousand, two hundred twenty".