223645423 has 2 divisors, whose sum is σ = 223645424. Its totient is φ = 223645422.

The previous prime is 223645417. The next prime is 223645453. The reversal of 223645423 is 324546322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223645423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223645403) 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, 111822711 + 111822712.

It is an arithmetic number, because the mean of its divisors is an integer number (111822712).

Almost surely, 2^223645423 is an apocalyptic number.

223645423 is a deficient number, since it is larger than the sum of its proper divisors (1).

223645423 is an equidigital number, since it uses as much as digits as its factorization.

223645423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 31.

The square root of 223645423 is about 14954.7792695178. The cubic root of 223645423 is about 606.9971773438.

The spelling of 223645423 in words is "two hundred twenty-three million, six hundred forty-five thousand, four hundred twenty-three".