23656543 has 2 divisors, whose sum is σ = 23656544. Its totient is φ = 23656542.

The previous prime is 23656541. The next prime is 23656553. The reversal of 23656543 is 34565632.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23656543 - 2¹ = 23656541 is a prime.

Together with 23656541, it forms a pair of twin primes.

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

It is equal to p_1486933 and since 23656543 and 1486933 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 23656499 and 23656508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23656541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11828271 + 11828272.

It is an arithmetic number, because the mean of its divisors is an integer number (11828272).

Almost surely, 2^23656543 is an apocalyptic number.

23656543 is a deficient number, since it is larger than the sum of its proper divisors (1).

23656543 is an equidigital number, since it uses as much as digits as its factorization.

23656543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 34.

The square root of 23656543 is about 4863.7992351659. The cubic root of 23656543 is about 287.0673234561.

The spelling of 23656543 in words is "twenty-three million, six hundred fifty-six thousand, five hundred forty-three".