21344024323 has 8 divisors (see below), whose sum is σ = 21601740528. Its totient is φ = 21087515904.

The previous prime is 21344024293. The next prime is 21344024327. The reversal of 21344024323 is 32342044312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21344024323 - 2⁵ = 21344024291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21344024291 and 21344024300.

It is not an unprimeable number, because it can be changed into a prime (21344024327) 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 7 ways as a sum of consecutive naturals, for example, 266365 + ... + 337102.

It is an arithmetic number, because the mean of its divisors is an integer number (2700217566).

Almost surely, 2^21344024323 is an apocalyptic number.

21344024323 is a deficient number, since it is larger than the sum of its proper divisors (257716205).

21344024323 is a wasteful number, since it uses less digits than its factorization.

21344024323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603893.

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

Adding to 21344024323 its reverse (32342044312), we get a palindrome (53686068635).

The spelling of 21344024323 in words is "twenty-one billion, three hundred forty-four million, twenty-four thousand, three hundred twenty-three".