223843 has 2 divisors, whose sum is σ = 223844. Its totient is φ = 223842.

The previous prime is 223841. The next prime is 223849. The reversal of 223843 is 348322.

223843 is nontrivially palindromic in base 16.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223843 - 2¹ = 223841 is a prime.

Together with 223841, it forms a pair of twin primes.

223843 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (223841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111921 + 111922.

It is an arithmetic number, because the mean of its divisors is an integer number (111922).

2²²³⁸⁴³ is an apocalyptic number.

223843 is a deficient number, since it is larger than the sum of its proper divisors (1).

223843 is an equidigital number, since it uses as much as digits as its factorization.

223843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 223843 is about 473.1204920525. The cubic root of 223843 is about 60.7175872978.

The spelling of 223843 in words is "two hundred twenty-three thousand, eight hundred forty-three".