2243 has 2 divisors, whose sum is σ = 2244. Its totient is φ = 2242.

The previous prime is 2239. The next prime is 2251. The reversal of 2243 is 3422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2243 - 2² = 2239 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2³ + 4² + 2⁵ + 3⁷ .

It is a plaindrome in base 12.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (2203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121 + 1122.

It is an arithmetic number, because the mean of its divisors is an integer number (1122).

2²²⁴³ is an apocalyptic number.

2243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243 is an equidigital number, since it uses as much as digits as its factorization.

2243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 11.

The square root of 2243 is about 47.3603209449. The cubic root of 2243 is about 13.0901038249.

Adding to 2243 its reverse (3422), we get a palindrome (5665).

It can be divided in two parts, 22 and 43, that multiplied together give a triangular number (946 = T₄₃).

The spelling of 2243 in words is "two thousand, two hundred forty-three", and thus it is an iban number.