223443943 has 2 divisors, whose sum is σ = 223443944. Its totient is φ = 223443942.

The previous prime is 223443929. The next prime is 223443947. The reversal of 223443943 is 349344322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223443943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223443899 and 223443908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223443947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111721971 + 111721972.

It is an arithmetic number, because the mean of its divisors is an integer number (111721972).

Almost surely, 2^223443943 is an apocalyptic number.

223443943 is a deficient number, since it is larger than the sum of its proper divisors (1).

223443943 is an equidigital number, since it uses as much as digits as its factorization.

223443943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 34.

The square root of 223443943 is about 14948.0414436139. The cubic root of 223443943 is about 606.8148432818.

The spelling of 223443943 in words is "two hundred twenty-three million, four hundred forty-three thousand, nine hundred forty-three".