Q: What is the digital root of 87,312,321

 A: 9

Why is 9 the digital root of the number 87,312,321?

The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.

How do you calculate the digital root of 87,312,321?


Split the number up and add each digit together:


8 + 7 + 3 + 1 + 2 + 3 + 2 + 1 = 27

If the answer is more than one digit, you would add each digit of the answer together again:

2 + 7 = 9

What is the digital root of number 87,312,321?

Answer: 9


More Examples

Number 87,312,31987,312,32087,312,32287,312,323
Digital Root 7812

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