Writing analog voltages on analog pins of Arduino
No. The analogWrite(pin, val) function is reserved to PWM pins (D3, D5, D6, D9, D10, and D11 in Arduino Nano). Pins marked as "ANALOG IN" on the board can work either as analog input (to the Analog to Digital Converter), digital input, or digital output. 

It is worth to note that the Arduino Nano (and any other Arduino board I'm aware of) actually doesn't have any 'true' analog output port. When you use analogWrite(pin, val) you are actually telling the Arduino to output a PWM signal with the duty cicle specified by val (100% for val = 255 and 0% for val = 0). If you actually do need a true analog output, you should consider using any form of analog lowpass filter at the specified PWM output port. Depending on how clean you want your signal to be, you could use a single capacitor or any other (a little more complex) filter.

If you don't know anything about filters, this could be a good starting point: ElectronicsTutorials - Passive Low Pass Filter

More insight about PWM in Arduino, here: EAS 199 - Basic Pulse Width Modulation