133085 has 8 divisors (see below), whose sum is σ = 163680. Its totient is φ = 103824.

The previous prime is 133073. The next prime is 133087. The reversal of 133085 is 580331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133085 - 2⁴ = 133069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95 + ... + 524.

It is an arithmetic number, because the mean of its divisors is an integer number (20460).

2¹³³⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

133085 is a deficient number, since it is larger than the sum of its proper divisors (30595).

133085 is an equidigital number, since it uses as much as digits as its factorization.

133085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 133085 is about 364.8081687682. The cubic root of 133085 is about 51.0555590858.

It can be divided in two parts, 1330 and 85, that multiplied together give a triangular number (113050 = T₄₇₅).

The spelling of 133085 in words is "one hundred thirty-three thousand, eighty-five".