321230424440 has 96 divisors (see below), whose sum is σ = 768224520000. Its totient is φ = 120864614400.

The previous prime is 321230424397. The next prime is 321230424443. The reversal of 321230424440 is 44424032123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321230424443) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 23101490 + ... + 23115390.

It is an arithmetic number, because the mean of its divisors is an integer number (8002338750).

Almost surely, 2^321230424440 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 321230424440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384112260000).

321230424440 is an abundant number, since it is smaller than the sum of its proper divisors (446994095560).

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

321230424440 is a wasteful number, since it uses less digits than its factorization.

321230424440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15945 (or 15924 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 321230424440 its reverse (44424032123), we get a palindrome (365654456563).

The spelling of 321230424440 in words is "three hundred twenty-one billion, two hundred thirty million, four hundred twenty-four thousand, four hundred forty".