133135 has 4 divisors (see below), whose sum is σ = 159768. Its totient is φ = 106504.

The previous prime is 133121. The next prime is 133153. The reversal of 133135 is 531331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133135 - 2⁵ = 133103 is a prime.

It is a Duffinian number.

133135 is a lucky number.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13309 + ... + 13318.

It is an arithmetic number, because the mean of its divisors is an integer number (39942).

2¹³³¹³⁵ is an apocalyptic number.

133135 is a deficient number, since it is larger than the sum of its proper divisors (26633).

133135 is an equidigital number, since it uses as much as digits as its factorization.

133135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26632.

The product of its digits is 135, while the sum is 16.

The square root of 133135 is about 364.8766915000. The cubic root of 133135 is about 51.0619521387.

Adding to 133135 its reverse (531331), we get a palindrome (664466).

It can be divided in two parts, 133 and 135, that multiplied together give a triangular number (17955 = T₁₈₉).

The spelling of 133135 in words is "one hundred thirty-three thousand, one hundred thirty-five".