Is 351 a deficient number and what is its deficiency?

Is 351 a deficient number?

Here we will explain and calculate if 351 is a deficient number and its deficiency if applicable.

351 is a deficient number if the sum of its proper divisors is less than 351.

The sum of its proper divisors is calculated as follows: 1 + 3 + 9 + 13 + 27 + 39 + 117 = 209.

209 is less than 351. Therefore, 351 is a deficient number.

The deficiency of 351 is 351 minus the sum of its proper divisors. Thus, the deficiency of 351 is 351 - 209 = 142

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