Is it appropriate to call the hiring manager if a phone number wasn’t provided?

Hi everyone! My university recently posted an internship opportunity at a company in my city that I’m really excited about. The listing included the hiring manager’s name and email, but unfortunately, there was no phone number provided.

As part of my research, I found the manager’s LinkedIn page, where I noticed a business phone number listed. I’m considering giving him a call to introduce myself and briefly express my enthusiasm for the role and why I believe I’d be a good fit.

Do you think this is a good idea, or would it come off as strange? With many candidates likely applying, I thought it could be a way to make a memorable impression.

Thanks for your insights!