20321223323 has 16 divisors (see below), whose sum is σ = 21345472512. Its totient is φ = 19321932000.

The previous prime is 20321223283. The next prime is 20321223337. The reversal of 20321223323 is 32332212302.

It is a cyclic number.

It is not a de Polignac number, because 20321223323 - 2¹² = 20321219227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321223353) 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 15 ways as a sum of consecutive naturals, for example, 629138 + ... + 660648.

It is an arithmetic number, because the mean of its divisors is an integer number (1334092032).

Almost surely, 2^20321223323 is an apocalyptic number.

20321223323 is a deficient number, since it is larger than the sum of its proper divisors (1024249189).

20321223323 is a wasteful number, since it uses less digits than its factorization.

20321223323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31906.

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

Adding to 20321223323 its reverse (32332212302), we get a palindrome (52653435625).

The spelling of 20321223323 in words is "twenty billion, three hundred twenty-one million, two hundred twenty-three thousand, three hundred twenty-three".