Subtracting 133386 from its reverse (683331), we obtain a palindrome (549945).
It is an Ulam number.
2133386 is an apocalyptic number.
133386 is the 516-th triangular number.
It is a practical number, because each smaller number is the sum of distinct divisors of 133386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152064).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
133386 is a wasteful number, since it uses less digits than its factorization.
133386 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 106.
The square root of 133386 is about 365.2204813534. The cubic root of 133386 is about 51.0940211013.
The spelling of 133386 in words is "one hundred thirty-three thousand, three hundred eighty-six".