nRF52832 QFN48 info variant value, 0x41414531, not listed in datasheet. Is this OK?

Hi There,

I am working with the nRF52832 and one thing that the software team noticed is that the info.variant we get from the micro is not listed in the data sheet v1.4. The variant we received is 0x41414531. Is this normal or OK?

I also want to confirm that we can used the NFC pins, P0.09 and P0.10, as general I/O to drive LEDs or enable pins, and pins P0.11 and P0.12 for I2C communication.

Thank you ,