321231020000 has 240 divisors, whose sum is σ = 871065507312. Its totient is φ = 115599360000.

The previous prime is 321231019943. The next prime is 321231020009. The reversal of 321231020000 is 20132123.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321231020009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21332474 + ... + 21347526.

Almost surely, 2^321231020000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321231020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435532753656).

321231020000 is an abundant number, since it is smaller than the sum of its proper divisors (549834487312).

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

321231020000 is a wasteful number, since it uses less digits than its factorization.

321231020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15191 (or 15168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 321231020000 its reverse (20132123), we get a palindrome (321251152123).

The spelling of 321231020000 in words is "three hundred twenty-one billion, two hundred thirty-one million, twenty thousand".