Encode your ints into a short base32 string (case-unsensitive letters and digits)

b32str.py

import math
import base64

def int_to_b32str(x):
    base = int(math.log2(1 + x) / 8) + 1  # How many bytes ?
    bytestring = x.to_bytes(base, 'big')
    b32str = base64.b32encode(bytestring).decode()
    return b32str.rstrip('=')  # remove trailing "="

def b32str_to_int(b):
    b32str = b.upper()  + "=" * (-len(b) % 8)  # Recreate trailing "="
    bytestring = base64.b32decode(b32str.encode())
    return int.from_bytes(bytestring, 'big')


# Test it with :
# import random

# for i in range(10):
#     x = random.randint(0, 10**9)
#     b = int_to_b32str(x)
#     print(x, '\t', b, '\t', b32str_to_int(b) == x)