135523135 has 8 divisors (see below), whose sum is σ = 177412176. Its totient is φ = 98562240.

The previous prime is 135523123. The next prime is 135523139. The reversal of 135523135 is 531325531.

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

It is not a de Polignac number, because 135523135 - 2²¹ = 133425983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135523139) 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, 1231974 + ... + 1232083.

It is an arithmetic number, because the mean of its divisors is an integer number (22176522).

Almost surely, 2^135523135 is an apocalyptic number.

135523135 is a deficient number, since it is larger than the sum of its proper divisors (41889041).

135523135 is a wasteful number, since it uses less digits than its factorization.

135523135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464073.

The product of its digits is 6750, while the sum is 28.

The square root of 135523135 is about 11641.4404177490. The cubic root of 135523135 is about 513.6545582754.

Adding to 135523135 its reverse (531325531), we get a palindrome (666848666).

The spelling of 135523135 in words is "one hundred thirty-five million, five hundred twenty-three thousand, one hundred thirty-five".