Ashwat,
The closest thing to checking if a field has a number is the VAL function. It returns ‘nothing’ (empty string?) if the field you pass in starts with a letter. This may not work for all of your use cases.
You may want to create your own formula function (i.e. custom ‘isNumber()’ function). Then you cna use this ‘declaratively’ on any page you need. See the documentation here-> https://docs.skuid.com/latest/en/skuid/api/skuid_formula.html
Thanks,
Bill
