diff --git a/functions/palindrome_number.py b/functions/palindrome_number.py
index 26529ec..8382eba 100644
--- a/functions/palindrome_number.py
+++ b/functions/palindrome_number.py
@@ -1,2 +1,12 @@
 def palindrome_number(x):
-    pass
+    temp = x
+    reverse = 0
+    while(x>0):
+        dig = x%10
+        reverse = reverse*10 + dig
+        x = x//10
+
+    if temp == reverse:
+        return True
+    else:
+        return False
diff --git a/tests/palindrome_number_test.py b/tests/palindrome_number_test.py
index 2603549..669271b 100644
--- a/tests/palindrome_number_test.py
+++ b/tests/palindrome_number_test.py
@@ -1,2 +1,34 @@
 import pytest
 from functions.palindrome_number import palindrome_number
+
+def test_returns_true_for_99():
+    # Arrange
+    n = 99
+
+    # Act
+    answer = palindrome_number(99)
+
+    # Assert
+    assert answer == True
+
+
+def test_returns_true_for_151():
+    # Arrange
+    n = 151
+
+    # Act
+    answer = palindrome_number(n)
+
+    # Assert
+    assert answer == True
+
+
+def test_returns_false_for_123():
+    # Arrange
+    n = 123
+
+    # Act
+    answer = palindrome_number(123)
+
+    # Assert
+    assert answer == False