Is 213 a deficient number and what is its deficiency?

Is 213 a deficient number?

Here we will explain and calculate if 213 is a deficient number and its deficiency if applicable.

213 is a deficient number if the sum of its proper divisors is less than 213.

The sum of its proper divisors is calculated as follows: 1 + 3 + 71 = 75.

75 is less than 213. Therefore, 213 is a deficient number.

The deficiency of 213 is 213 minus the sum of its proper divisors. Thus, the deficiency of 213 is 213 - 75 = 138

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