It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 141331 = 79 ⋅1789.
It is a 3-Lehmer number, since φ(133141) divides (133141-1)3.
It is a cyclic number.
It is a Duffinian number.
133141 is a lucky number.
It is a congruent number.
2133141 is an apocalyptic number.
133141 is the 211-st octagonal number.
It is an amenable number.
133141 is an equidigital number, since it uses as much as digits as its factorization.
133141 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 842.
The square root of 133141 is about 364.8849133631. The cubic root of 133141 is about 51.0627191974.
Adding to 133141 its reverse (141331), we get a palindrome (274472).
The spelling of 133141 in words is "one hundred thirty-three thousand, one hundred forty-one".