135218285 has 8 divisors (see below), whose sum is σ = 162479736. Its totient is φ = 108029440.

The previous prime is 135218257. The next prime is 135218341. The reversal of 135218285 is 582812531.

It can be written as a sum of positive squares in 4 ways, for example, as 2208196 + 133010089 = 1486^2 + 11533^2 .

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

It is not a de Polignac number, because 135218285 - 2²⁶ = 68109421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13964 + ... + 21573.

It is an arithmetic number, because the mean of its divisors is an integer number (20309967).

Almost surely, 2^135218285 is an apocalyptic number.

It is an amenable number.

135218285 is a deficient number, since it is larger than the sum of its proper divisors (27261451).

135218285 is an equidigital number, since it uses as much as digits as its factorization.

135218285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36303.

The product of its digits is 19200, while the sum is 35.

The square root of 135218285 is about 11628.3397353191. The cubic root of 135218285 is about 513.2691255593.

The spelling of 135218285 in words is "one hundred thirty-five million, two hundred eighteen thousand, two hundred eighty-five".