331123213020 has 48 divisors (see below), whose sum is σ = 981682940448. Its totient is φ = 83105433600.

The previous prime is 331123213019. The next prime is 331123213033. The reversal of 331123213020 is 20312321133.

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 15 ways as a sum of consecutive naturals, for example, 162314281 + ... + 162316320.

It is an arithmetic number, because the mean of its divisors is an integer number (20451727926).

Almost surely, 2^331123213020 is an apocalyptic number.

331123213020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331123213020 is an abundant number, since it is smaller than the sum of its proper divisors (650559727428).

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

331123213020 is a wasteful number, since it uses less digits than its factorization.

331123213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324630630 (or 324630628 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 331123213020 its reverse (20312321133), we get a palindrome (351435534153).

The spelling of 331123213020 in words is "three hundred thirty-one billion, one hundred twenty-three million, two hundred thirteen thousand, twenty".