31×10

31 × 10 is the product of the integers 31 and 10, giving the result 310. It is a straightforward example of multiplication in base-10 arithmetic.

In decimal notation, multiplying by 10 shifts the digits one place to the left and adds a zero at the end. Therefore, 31 × 10 equals 310. The prime factorization of 310 is 2 × 5 × 31, which shows that the product is divisible by 2, 5, and 10. As a multiple of 10, 310 ends with a zero in decimal notation. This makes it a common example used to illustrate how multiplication by powers of ten affects a number, and it can be interpreted as ten groups of thirty-one units or as thirty-one tens.

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