Adding to 136 its reverse (631), we get a palindrome (767).
136 is nontrivially palindromic in base 9 and base 16.
136 is an esthetic number in base 8 and base 14, because in such bases its adjacent digits differ by 1.
It is a tau number, because it is divible by the number of its divisors (8).
It is a magnanimous number.
136 is an undulating number in base 4 and base 9.
136 is a nontrivial repdigit in base 16.
It is a plaindrome in base 6, base 10, base 11, base 14 and base 16.
It is a nialpdrome in base 8, base 12, base 13, base 15 and base 16.
It is a zygodrome in base 16.
It is a congruent number.
In principle, a polygon with 136 sides can be constructed with ruler and compass.
136 is the 16-th triangular number.
It is an amenable number.
136 is a wasteful number, since it uses less digits than its factorization.
136 is an evil number, because the sum of its binary digits is even.
The square root of 136 is about 11.6619037897. The cubic root of 136 is about 5.1425631813.
The spelling of 136 in words is "one hundred thirty-six", and thus it is an aban number.