321323113020 has 192 divisors, whose sum is σ = 1137257404416. Its totient is φ = 65963289600.

The previous prime is 321323113019. The next prime is 321323113039. The reversal of 321323113020 is 20311323123.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 593256 + ... + 997295.

It is an arithmetic number, because the mean of its divisors is an integer number (5923215648).

Almost surely, 2^321323113020 is an apocalyptic number.

321323113020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321323113020 is an abundant number, since it is smaller than the sum of its proper divisors (815934291396).

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

321323113020 is a wasteful number, since it uses less digits than its factorization.

321323113020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590620 (or 1590618 counting only the distinct ones).

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

Adding to 321323113020 its reverse (20311323123), we get a palindrome (341634436143).

The spelling of 321323113020 in words is "three hundred twenty-one billion, three hundred twenty-three million, one hundred thirteen thousand, twenty".