Using "not" in ARM

[ARosch]

So I originally asked about using hex values, I figured that out. Now I need help with the "not" command.
Is there a way to execute the "not" command in ARM to flip bits? Every time I use not it gives me the error "bad instruction".

For example I am trying the line:
not v3,v3

Thanks!

[Ken g6]

Looks like you have MVN: MoVe Not.

[ARosch]

Thank you so much!