Hello from MrBillDoesMath!
Answer:
Interest paid = $ 1,713,568.73
Monthly p[payment = $4913.25
Discussion:
From the "compound interest formula:
A = final amount
P = Initial amount (Principal)
r = yearly interest rate
n = number of years of accumulation.
In our case,
A = 350000( 1 + .052)^35 =
   350000 (5.90)  =          (approx)
   $2,063,568.73
Interest = Â $2,063,568.73 - 350000 = Â $ 1,713,568.73
There are 35 *12 = 420 months in 35 years. So the monthly payment would be  ($2,063,568.73 / 420)  = $4913.25
Thank you,
MrB