diff --git a/django/forms/fields.py b/django/forms/fields.py
index c50cd164ed..8a534e7bb5 100644
--- a/django/forms/fields.py
+++ b/django/forms/fields.py
@@ -275,7 +275,7 @@ class IntegerField(Field):
             value = formats.sanitize_separators(value)
         # Strip trailing decimal and zeros.
         try:
-            value = int(self.re_decimal.sub('', str(value)))
+            value = int(self.re_decimal.sub('', force_text(value)))
         except (ValueError, TypeError):
             raise ValidationError(self.error_messages['invalid'], code='invalid')
         return value
diff --git a/tests/forms_tests/field_tests/test_integerfield.py b/tests/forms_tests/field_tests/test_integerfield.py
index d5c14857ed..cd648279a6 100644
--- a/tests/forms_tests/field_tests/test_integerfield.py
+++ b/tests/forms_tests/field_tests/test_integerfield.py
@@ -123,6 +123,10 @@ class IntegerFieldTest(FormFieldAssertionsMixin, SimpleTestCase):
         self.assertEqual(9223372036854775808, f.clean('9223372036854775808'))
         self.assertEqual(9223372036854775808, f.clean('9223372036854775808.0'))
 
+    def test_integerfield_unicode_number(self):
+        f = IntegerField()
+        self.assertEqual(50, f.clean('５０'))
+
     def test_integerfield_subclass(self):
         """
         Class-defined widget is not overwritten by __init__() (#22245).