std::Integral
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   Defined in header  <concepts>
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|   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)  |