23040320321 has 4 divisors (see below), whose sum is σ = 23049999444. Its totient is φ = 23030641200.

The previous prime is 23040320299. The next prime is 23040320323. The reversal of 23040320321 is 12302304032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4933657600 + 18106662721 = 70240^2 + 134561^2 .

It is a cyclic number.

It is not a de Polignac number, because 23040320321 - 2⁶ = 23040320257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23040320293 and 23040320302.

It is not an unprimeable number, because it can be changed into a prime (23040320323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4835990 + ... + 4840751.

It is an arithmetic number, because the mean of its divisors is an integer number (5762499861).

Almost surely, 2^23040320321 is an apocalyptic number.

It is an amenable number.

23040320321 is a deficient number, since it is larger than the sum of its proper divisors (9679123).

23040320321 is an equidigital number, since it uses as much as digits as its factorization.

23040320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679122.

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

Adding to 23040320321 its reverse (12302304032), we get a palindrome (35342624353).

The spelling of 23040320321 in words is "twenty-three billion, forty million, three hundred twenty thousand, three hundred twenty-one".