21032323023 has 32 divisors (see below), whose sum is σ = 29752360960. Its totient is φ = 13197206880.

The previous prime is 21032323001. The next prime is 21032323043. The reversal of 21032323023 is 32032323012.

It is not a de Polignac number, because 21032323023 - 2⁶ = 21032322959 is a prime.

It is a super-2 number, since 2×21032323023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032323043) 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 31 ways as a sum of consecutive naturals, for example, 470886 + ... + 513612.

It is an arithmetic number, because the mean of its divisors is an integer number (929761280).

Almost surely, 2^21032323023 is an apocalyptic number.

21032323023 is a deficient number, since it is larger than the sum of its proper divisors (8720037937).

21032323023 is a wasteful number, since it uses less digits than its factorization.

21032323023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42907.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21032323023 its reverse (32032323012), we get a palindrome (53064646035).

The spelling of 21032323023 in words is "twenty-one billion, thirty-two million, three hundred twenty-three thousand, twenty-three".