23181226807 has 4 divisors (see below), whose sum is σ = 23186561400. Its totient is φ = 23175892216.

The previous prime is 23181226799. The next prime is 23181226853. The reversal of 23181226807 is 70862218132.

It is a happy number.

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 23181226807 - 2³ = 23181226799 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23181226807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23181226207) 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, 2660773 + ... + 2669470.

It is an arithmetic number, because the mean of its divisors is an integer number (5796640350).

Almost surely, 2^23181226807 is an apocalyptic number.

23181226807 is a deficient number, since it is larger than the sum of its proper divisors (5334593).

23181226807 is an equidigital number, since it uses as much as digits as its factorization.

23181226807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334592.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 23181226807 in words is "twenty-three billion, one hundred eighty-one million, two hundred twenty-six thousand, eight hundred seven".