21422310323 has 8 divisors (see below), whose sum is σ = 22583122320. Its totient is φ = 20264830560.

The previous prime is 21422310319. The next prime is 21422310347. The reversal of 21422310323 is 32301322412.

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

It is not a de Polignac number, because 21422310323 - 2² = 21422310319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21422310023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819848 + ... + 845573.

It is an arithmetic number, because the mean of its divisors is an integer number (2822890290).

Almost surely, 2^21422310323 is an apocalyptic number.

21422310323 is a deficient number, since it is larger than the sum of its proper divisors (1160811997).

21422310323 is a wasteful number, since it uses less digits than its factorization.

21422310323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666117.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21422310323 its reverse (32301322412), we get a palindrome (53723632735).

The spelling of 21422310323 in words is "twenty-one billion, four hundred twenty-two million, three hundred ten thousand, three hundred twenty-three".