Hello ,
This is very common for students to write about thier college in thier Instagram Bio now a days , In IITR 23 the number 23 means that the student will graduate in the year 2023 (his course will complete in this year), it you know his/her course you can also find the year of admission .
Hope this helps.
College Comparison based on Courses, Placement, Rank, Fee
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile