133835 has 16 divisors (see below), whose sum is σ = 181440. Its totient is φ = 94080.

The previous prime is 133831. The next prime is 133843. The reversal of 133835 is 538331.

It is not a de Polignac number, because 133835 - 2² = 133831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133835.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1850 + ... + 1920.

It is an arithmetic number, because the mean of its divisors is an integer number (11340).

2¹³³⁸³⁵ is an apocalyptic number.

133835 is a deficient number, since it is larger than the sum of its proper divisors (47605).

133835 is a wasteful number, since it uses less digits than its factorization.

133835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118.

The product of its digits is 1080, while the sum is 23.

The square root of 133835 is about 365.8346621084. The cubic root of 133835 is about 51.1512872866.

Subtracting 133835 from its reverse (538331), we obtain a square (404496 = 636²).

The spelling of 133835 in words is "one hundred thirty-three thousand, eight hundred thirty-five".