23040943 has 4 divisors (see below), whose sum is σ = 23299920. Its totient is φ = 22781968.

The previous prime is 23040931. The next prime is 23040971. The reversal of 23040943 is 34904032.

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

It is a cyclic number.

It is not a de Polignac number, because 23040943 - 2⁹ = 23040431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129355 + ... + 129532.

It is an arithmetic number, because the mean of its divisors is an integer number (5824980).

Almost surely, 2^23040943 is an apocalyptic number.

23040943 is a deficient number, since it is larger than the sum of its proper divisors (258977).

23040943 is an equidigital number, since it uses as much as digits as its factorization.

23040943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258976.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23040943 is about 4800.0982281616. The cubic root of 23040943 is about 284.5553464247. Note that the first 3 decimals are identical.

Adding to 23040943 its reverse (34904032), we get a palindrome (57944975).

The spelling of 23040943 in words is "twenty-three million, forty thousand, nine hundred forty-three".