No, every WHOLE number you can possible think of is an integer.
For example: -2,253 and 2,253 are integers, but something like 1.5 or 1 1/2 are not integers because they are fractions/decimals and not whole numbers.
Is -34a integer
-34 is an integer, not a fraction.
34.1 rounded to the nearest integer is 34
The integer representation of 33.6 is 34 when rounded to the nearest whole number. If you simply want the integer part without rounding, it would be 33.
0034 is an integer. You could express it as a fraction in the form 34/1.