43123222243 has 4 divisors (see below), whose sum is σ = 43607752920. Its totient is φ = 42638691568.

The previous prime is 43123222171. The next prime is 43123222253. The reversal of 43123222243 is 34222232134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34222232134 = 2 ⋅17111116067.

It is a cyclic number.

It is not a de Polignac number, because 43123222243 - 2¹⁷ = 43123091171 is a prime.

It is a super-2 number, since 2×43123222243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43123222253) 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, 242265205 + ... + 242265382.

It is an arithmetic number, because the mean of its divisors is an integer number (10901938230).

Almost surely, 2^43123222243 is an apocalyptic number.

43123222243 is a deficient number, since it is larger than the sum of its proper divisors (484530677).

43123222243 is an equidigital number, since it uses as much as digits as its factorization.

43123222243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484530676.

The product of its digits is 13824, while the sum is 28.

Adding to 43123222243 its reverse (34222232134), we get a palindrome (77345454377).

The spelling of 43123222243 in words is "forty-three billion, one hundred twenty-three million, two hundred twenty-two thousand, two hundred forty-three".