python3, 43 bytes

Result

WA

Code [DL]

print(''.join(map(str,sorted(map(int,s)))))

stdin

8380814746313030954131829843736879370403480905618093122995115824180935782707542593604085566339299753

stdout

stderr

Traceback (most recent call last):
  File "/volume/CODE", line 1, in <module>
    print(''.join(map(str,sorted(map(int,s)))))
NameError: name 's' is not defined

strace