23412543 has 24 divisors (see below), whose sum is σ = 39617280. Its totient is φ = 12161520.

The previous prime is 23412509. The next prime is 23412569. The reversal of 23412543 is 34521432.

It is not a de Polignac number, because 23412543 - 2⁶ = 23412479 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23412143) 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 23 ways as a sum of consecutive naturals, for example, 5623 + ... + 8856.

It is an arithmetic number, because the mean of its divisors is an integer number (1650720).

Almost surely, 2^23412543 is an apocalyptic number.

23412543 is a deficient number, since it is larger than the sum of its proper divisors (16204737).

23412543 is a wasteful number, since it uses less digits than its factorization.

23412543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14507 (or 14500 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 23412543 is about 4838.6509483533. The cubic root of 23412543 is about 286.0769471997.

Adding to 23412543 its reverse (34521432), we get a palindrome (57933975).

Subtracting 23412543 from its reverse (34521432), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 2341 and 2543, that added together give a palindrome (4884).

The spelling of 23412543 in words is "twenty-three million, four hundred twelve thousand, five hundred forty-three".