135135291 has 4 divisors (see below), whose sum is σ = 180180392. Its totient is φ = 90090192.

The previous prime is 135135271. The next prime is 135135361. The reversal of 135135291 is 192531531.

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

It is not a de Polignac number, because 135135291 - 2¹⁵ = 135102523 is a prime.

It is a super-3 number, since 3×135135291³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135135251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22522546 + ... + 22522551.

It is an arithmetic number, because the mean of its divisors is an integer number (45045098).

Almost surely, 2^135135291 is an apocalyptic number.

135135291 is a deficient number, since it is larger than the sum of its proper divisors (45045101).

135135291 is an equidigital number, since it uses as much as digits as its factorization.

135135291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45045100.

The product of its digits is 4050, while the sum is 30.

The square root of 135135291 is about 11624.7705783813. The cubic root of 135135291 is about 513.1640929791.

The spelling of 135135291 in words is "one hundred thirty-five million, one hundred thirty-five thousand, two hundred ninety-one".