23432543 has 4 divisors (see below), whose sum is σ = 23695920. Its totient is φ = 23169168.

The previous prime is 23432537. The next prime is 23432569. The reversal of 23432543 is 34523432.

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 23432543 - 2⁴ = 23432527 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23432573) 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, 131555 + ... + 131732.

It is an arithmetic number, because the mean of its divisors is an integer number (5923980).

Almost surely, 2^23432543 is an apocalyptic number.

23432543 is a deficient number, since it is larger than the sum of its proper divisors (263377).

23432543 is an equidigital number, since it uses as much as digits as its factorization.

23432543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263376.

The product of its digits is 8640, while the sum is 26.

The square root of 23432543 is about 4840.7171989283. The cubic root of 23432543 is about 286.1583837545.

Adding to 23432543 its reverse (34523432), we get a palindrome (57955975).

The spelling of 23432543 in words is "twenty-three million, four hundred thirty-two thousand, five hundred forty-three".