std::Integral
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | Defined in header  <concepts> | ||
| template < class T > concept Integral = std::is_integral_v<T>; | (since C++20) | |
The concept Integral<T> is satisfied if and only if T is an integral type.
See also
| (C++11) | checks if a type is an integral type (class template) |