23520443 has 2 divisors, whose sum is σ = 23520444. Its totient is φ = 23520442.

The previous prime is 23520403. The next prime is 23520473. The reversal of 23520443 is 34402532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23520443 - 2⁸ = 23520187 is a prime.

It is a super-2 number, since 2×23520443² = 1106422477832498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23520403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11760221 + 11760222.

It is an arithmetic number, because the mean of its divisors is an integer number (11760222).

Almost surely, 2^23520443 is an apocalyptic number.

23520443 is a deficient number, since it is larger than the sum of its proper divisors (1).

23520443 is an equidigital number, since it uses as much as digits as its factorization.

23520443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 23520443 is about 4849.7879335080. The cubic root of 23520443 is about 286.5157490883.

Adding to 23520443 its reverse (34402532), we get a palindrome (57922975).

The spelling of 23520443 in words is "twenty-three million, five hundred twenty thousand, four hundred forty-three".