321400322403400 has 96 divisors (see below), whose sum is σ = 749076885698400. Its totient is φ = 128246846182400.

The previous prime is 321400322403311. The next prime is 321400322403409. The reversal of 321400322403400 is 4304223004123.

It is not an unprimeable number, because it can be changed into a prime (321400322403409) 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, 1883822499 + ... + 1883993101.

It is an arithmetic number, because the mean of its divisors is an integer number (7802884226025).

Almost surely, 2^{321400322403400} 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 321400322403400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374538442849200).

321400322403400 is an abundant number, since it is smaller than the sum of its proper divisors (427676563295000).

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

321400322403400 is a wasteful number, since it uses less digits than its factorization.

321400322403400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193519 (or 193510 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 321400322403400 its reverse (4304223004123), we get a palindrome (325704545407523).

The spelling of 321400322403400 in words is "three hundred twenty-one trillion, four hundred billion, three hundred twenty-two million, four hundred three thousand, four hundred".