43423440223 has 2 divisors, whose sum is σ = 43423440224. Its totient is φ = 43423440222.

The previous prime is 43423440217. The next prime is 43423440251. The reversal of 43423440223 is 32204432434.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43423440223 - 2⁵ = 43423440191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43423440253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21711720111 + 21711720112.

It is an arithmetic number, because the mean of its divisors is an integer number (21711720112).

Almost surely, 2^43423440223 is an apocalyptic number.

43423440223 is a deficient number, since it is larger than the sum of its proper divisors (1).

43423440223 is an equidigital number, since it uses as much as digits as its factorization.

43423440223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 43423440223 its reverse (32204432434), we get a palindrome (75627872657).

The spelling of 43423440223 in words is "forty-three billion, four hundred twenty-three million, four hundred forty thousand, two hundred twenty-three".