223440043 has 2 divisors, whose sum is σ = 223440044. Its totient is φ = 223440042.

The previous prime is 223440001. The next prime is 223440047. The reversal of 223440043 is 340044322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223440043 is a prime.

It is equal to p_12301717 and since 223440043 and 12301717 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 = 223439996 and 223440023.

It is not a weakly prime, because it can be changed into another prime (223440047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111720021 + 111720022.

It is an arithmetic number, because the mean of its divisors is an integer number (111720022).

Almost surely, 2^223440043 is an apocalyptic number.

223440043 is a deficient number, since it is larger than the sum of its proper divisors (1).

223440043 is an equidigital number, since it uses as much as digits as its factorization.

223440043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 223440043 is about 14947.9109911720. The cubic root of 223440043 is about 606.8113128040.

Adding to 223440043 its reverse (340044322), we get a palindrome (563484365).

The spelling of 223440043 in words is "two hundred twenty-three million, four hundred forty thousand, forty-three".