2223

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Number

$2223$ (two thousand, two hundred and twenty-three) is:

$3^2 \times 13 \times 19$

The $9$th Kaprekar number after $1$, $9$, $45$, $55$, $99$, $297$, $703$, $999$:

$2223^2 = 4 \, 941 \, 729 \to 494 + 1729 = 2223$

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