321423092781232 has 80 divisors (see below), whose sum is σ = 675965917599840. Its totient is φ = 147179652673536.

The previous prime is 321423092781227. The next prime is 321423092781247. The reversal of 321423092781232 is 232187290324123.

It is a super-2 number, since 2×321423092781232² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6152658 + ... + 26090254.

It is an arithmetic number, because the mean of its divisors is an integer number (8449573969998).

Almost surely, 2^{321423092781232} 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 321423092781232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337982958799920).

321423092781232 is an abundant number, since it is smaller than the sum of its proper divisors (354542824818608).

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

321423092781232 is a wasteful number, since it uses less digits than its factorization.

321423092781232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19938230 (or 19938224 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 321423092781232 in words is "three hundred twenty-one trillion, four hundred twenty-three billion, ninety-two million, seven hundred eighty-one thousand, two hundred thirty-two".