21230322323 has 16 divisors (see below), whose sum is σ = 24386763264. Its totient is φ = 18104878080.

The previous prime is 21230322301. The next prime is 21230322343. The reversal of 21230322323 is 32322303212.

It is a cyclic number.

It is not a de Polignac number, because 21230322323 - 2¹² = 21230318227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21230322343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2905811 + ... + 2913107.

It is an arithmetic number, because the mean of its divisors is an integer number (1524172704).

Almost surely, 2^21230322323 is an apocalyptic number.

21230322323 is a deficient number, since it is larger than the sum of its proper divisors (3156440941).

21230322323 is a wasteful number, since it uses less digits than its factorization.

21230322323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21230322323 its reverse (32322303212), we get a palindrome (53552625535).

The spelling of 21230322323 in words is "twenty-one billion, two hundred thirty million, three hundred twenty-two thousand, three hundred twenty-three".