23243809133 has 2 divisors, whose sum is σ = 23243809134. Its totient is φ = 23243809132.

The previous prime is 23243809081. The next prime is 23243809151. The reversal of 23243809133 is 33190834232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21257056804 + 1986752329 = 145798^2 + 44573^2 .

It is a cyclic number.

It is not a de Polignac number, because 23243809133 - 2¹⁴ = 23243792749 is a prime.

It is a super-4 number, since 4×23243809133⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23243869133) 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 as a sum of consecutive naturals, namely, 11621904566 + 11621904567.

It is an arithmetic number, because the mean of its divisors is an integer number (11621904567).

Almost surely, 2^23243809133 is an apocalyptic number.

It is an amenable number.

23243809133 is a deficient number, since it is larger than the sum of its proper divisors (1).

23243809133 is an equidigital number, since it uses as much as digits as its factorization.

23243809133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 23243809133 in words is "twenty-three billion, two hundred forty-three million, eight hundred nine thousand, one hundred thirty-three".