21232304023 has 32 divisors (see below), whose sum is σ = 25613619200. Its totient is φ = 17574732000.

The previous prime is 21232304017. The next prime is 21232304029. The reversal of 21232304023 is 32040323212.

It is an interprime number because it is at equal distance from previous prime (21232304017) and next prime (21232304029).

It is not a de Polignac number, because 21232304023 - 2²⁵ = 21198749591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21232303985 and 21232304003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232304029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5750608 + ... + 5754298.

It is an arithmetic number, because the mean of its divisors is an integer number (800425600).

Almost surely, 2^21232304023 is an apocalyptic number.

21232304023 is a deficient number, since it is larger than the sum of its proper divisors (4381315177).

21232304023 is an equidigital number, since it uses as much as digits as its factorization.

21232304023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284 (or 4270 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21232304023 its reverse (32040323212), we get a palindrome (53272627235).

The spelling of 21232304023 in words is "twenty-one billion, two hundred thirty-two million, three hundred four thousand, twenty-three".