Subtracting from 135 its product of digits (15), we obtain a triangular number (120 = T15).
Multipling 135 by its product of digits (15), we get a square (2025 = 452).
Adding to 135 its reverse (531), we get a palindrome (666).
135 is nontrivially palindromic in base 6, base 7 and base 14.
135 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
135 is an esthetic number in base 6 and base 16, because in such bases its adjacent digits differ by 1.
It is a d-powerful number, because it can be written as 1 + 32 + 53 .
135 is an undulating number in base 6 and base 7.
135 is strictly pandigital in base 4.
135 is a lucky number.
135 is a nontrivial repdigit in base 14.
It is a straight-line number, since its digits are in arithmetic progression.
It is a plaindrome in base 10, base 11 and base 14.
It is a nialpdrome in base 12, base 13, base 14, base 15 and base 16.
It is a zygodrome in base 14.
It is a congruent number.
135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
135 is an equidigital number, since it uses as much as digits as its factorization.
135 is an evil number, because the sum of its binary digits is even.
The square root of 135 is about 11.6189500386. The cubic root of 135 is about 5.1299278400.
The spelling of 135 in words is "one hundred thirty-five", and thus it is an aban number.