20323221023 has 16 divisors (see below), whose sum is σ = 23431583040. Its totient is φ = 17266507776.

The previous prime is 20323221011. The next prime is 20323221029. The reversal of 20323221023 is 32012232302.

It is not a de Polignac number, because 20323221023 - 2⁸ = 20323220767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323220986 and 20323221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 629663 + ... + 661151.

It is an arithmetic number, because the mean of its divisors is an integer number (1464473940).

Almost surely, 2^20323221023 is an apocalyptic number.

20323221023 is a deficient number, since it is larger than the sum of its proper divisors (3108362017).

20323221023 is a wasteful number, since it uses less digits than its factorization.

20323221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32306.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20323221023 its reverse (32012232302), we get a palindrome (52335453325).

The spelling of 20323221023 in words is "twenty billion, three hundred twenty-three million, two hundred twenty-one thousand, twenty-three".