Final answer:
Only 1.313233 is an irrational number in the list.
Step-by-step explanation:
An irrational number is a number that cannot be expressed as a fraction or a terminating or repeating decimal. From the list of numbers, 1.313233 is a non-repeating decimal and therefore an irrational number. √64 can be simplified to 8, which is a rational number. 37 is a rational number because it can be expressed as 37/1. 2 is also a rational number because it can be expressed as 2/1.
So, the only irrational number in the list is 1.313233.