21323031222023 has 4 divisors (see below), whose sum is σ = 22250119536048. Its totient is φ = 20395942908000.

The previous prime is 21323031222007. The next prime is 21323031222187. The reversal of 21323031222023 is 32022213032312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21323031222023 - 2⁴ = 21323031222007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21323031221983 and 21323031222001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323031252023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463544156978 + ... + 463544157023.

It is an arithmetic number, because the mean of its divisors is an integer number (5562529884012).

Almost surely, 2^{21323031222023} is an apocalyptic number.

21323031222023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21323031222023 is a deficient number, since it is larger than the sum of its proper divisors (927088314025).

21323031222023 is an equidigital number, since it uses as much as digits as its factorization.

21323031222023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927088314024.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21323031222023 its reverse (32022213032312), we get a palindrome (53345244254335).

The spelling of 21323031222023 in words is "twenty-one trillion, three hundred twenty-three billion, thirty-one million, two hundred twenty-two thousand, twenty-three".