
    Given a delivery route identifier number, develop a system that determines the next available route number by rearranging its digits, ensuring the new route is the smallest possible number larger than the current one. This route adjustment is crucial for dynamically reassigning delivery sequences when traffic conditions change, requiring immediate route modifications while maintaining the same set of identifying digits.
    

    
def rearrange_bigger(n):
    """
    Given a delivery route identifier number, develop a system that determines the next available route number by rearranging its digits, ensuring the new route is the smallest possible number larger than the current one. This route adjustment is crucial for dynamically reassigning delivery sequences when traffic conditions change, requiring immediate route modifications while maintaining the same set of identifying digits.
    

    """
def rearrange_bigger(n):
    """
    Given a delivery route identifier number, develop a system that determines the next available route number by rearranging its digits, ensuring the new route is the smallest possible number larger than the current one. This route adjustment is crucial for dynamically reassigning delivery sequences when traffic conditions change, requiring immediate route modifications while maintaining the same set of identifying digits.
    

    """
    nums = list(str(n))
    for i in range(len(nums) - 2, -1, -1):
        if nums[i] < nums[i + 1]:
            z = nums[i:]
            y = min(filter(lambda x: x > z[0], z))
            z.remove(y)
            z.sort()
            nums[i:] = [y] + z
            return int(''.join(nums))
    return False