AA river bet

[Interested]

Hi, I've recently posted KK hand with river bet question - so here is it on more with AA hand

Crypto 10 handed

Hero is CO with A [img]/images/graemlins/diamond.gif[/img]A [img]/images/graemlins/heart.gif[/img]

UTG limps, MP1 limps, MP3 limps, Hero raise, BB call, all call
Flop 4 [img]/images/graemlins/club.gif[/img]7 [img]/images/graemlins/spade.gif[/img]A [img]/images/graemlins/spade.gif[/img] (5 plaers / pot 10.5 SB)
BB check, UTG bet, MP1 raise, MP3 fold, Hero 3-bet, BB fold, MP1 call, MP3 call

Turn 9 [img]/images/graemlins/spade.gif[/img] (3 players / 9.5 BB)
All check to Hero, Hero bet, all call

River 2 [img]/images/graemlins/diamond.gif[/img] (3 players / pot 12.5 BB)
All check, Hero bet

Question: is this bet for value in the long run? Any other comments on play?