21236234323 has 8 divisors (see below), whose sum is σ = 21949110992. Its totient is φ = 20530669536.

The previous prime is 21236234303. The next prime is 21236234363. The reversal of 21236234323 is 32343263212.

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 21236234323 - 2²⁹ = 20699363411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21236234303) 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, 1822065 + ... + 1833682.

It is an arithmetic number, because the mean of its divisors is an integer number (2743638874).

Almost surely, 2^21236234323 is an apocalyptic number.

21236234323 is a deficient number, since it is larger than the sum of its proper divisors (712876669).

21236234323 is a wasteful number, since it uses less digits than its factorization.

21236234323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655941.

The product of its digits is 31104, while the sum is 31.

Adding to 21236234323 its reverse (32343263212), we get a palindrome (53579497535).

The spelling of 21236234323 in words is "twenty-one billion, two hundred thirty-six million, two hundred thirty-four thousand, three hundred twenty-three".