321131233020 has 48 divisors (see below), whose sum is σ = 968334181920. Its totient is φ = 79047687936.

The previous prime is 321131233001. The next prime is 321131233067. The reversal of 321131233020 is 20332131123.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205852575 + ... + 205854134.

It is an arithmetic number, because the mean of its divisors is an integer number (20173628790).

Almost surely, 2^321131233020 is an apocalyptic number.

321131233020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321131233020 is an abundant number, since it is smaller than the sum of its proper divisors (647202948900).

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

321131233020 is a wasteful number, since it uses less digits than its factorization.

321131233020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411706734 (or 411706732 counting only the distinct ones).

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

Adding to 321131233020 its reverse (20332131123), we get a palindrome (341463364143).

The spelling of 321131233020 in words is "three hundred twenty-one billion, one hundred thirty-one million, two hundred thirty-three thousand, twenty".