321440443344423 has 32 divisors (see below), whose sum is σ = 512852333414400. Its totient is φ = 197804535733728.

The previous prime is 321440443344409. The next prime is 321440443344467. The reversal of 321440443344423 is 324443344044123.

321440443344423 is a `hidden beast` number, since 3 + 2 + 144 + 0 + 4 + 43 + 3 + 44 + 423 = 666.

It is not a de Polignac number, because 321440443344423 - 2¹³ = 321440443336231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321440443344023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2520598 + ... + 25480076.

It is an arithmetic number, because the mean of its divisors is an integer number (16026635419200).

Almost surely, 2^{321440443344423} is an apocalyptic number.

321440443344423 is a deficient number, since it is larger than the sum of its proper divisors (191411890069977).

321440443344423 is a wasteful number, since it uses less digits than its factorization.

321440443344423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22999388 (or 22999382 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 45.

Adding to 321440443344423 its reverse (324443344044123), we get a palindrome (645883787388546).

The spelling of 321440443344423 in words is "three hundred twenty-one trillion, four hundred forty billion, four hundred forty-three million, three hundred forty-four thousand, four hundred twenty-three".