Perfect combination of 2016b new function and delicate thought.
Nice!! I'm not the only one who solved this problem without str2num... ;-)
Of course your are not :)
Determine if a Given Number is a Triangle Number
Project Euler: Problem 7, Nth prime
Return area of square
Determine the square root
Sum of diagonals elements of a matrix
Whole Number Concatenator
Factorions: Numbers that equal the sum of the factorials of their digits
Distance between two GPS Coordinates
Dudeney Numbers: Numbers which are the cube of their decimal sum
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