135018203 has 4 divisors (see below), whose sum is σ = 135276888. Its totient is φ = 134759520.

The previous prime is 135018187. The next prime is 135018223. The reversal of 135018203 is 302810531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302810531 = 211 ⋅1435121.

It is a cyclic number.

It is not a de Polignac number, because 135018203 - 2⁴ = 135018187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135018223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128558 + ... + 129603.

It is an arithmetic number, because the mean of its divisors is an integer number (33819222).

Almost surely, 2^135018203 is an apocalyptic number.

135018203 is a deficient number, since it is larger than the sum of its proper divisors (258685).

135018203 is an equidigital number, since it uses as much as digits as its factorization.

135018203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258684.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 135018203 is about 11619.7333446168. The cubic root of 135018203 is about 513.0158397758.

Adding to 135018203 its reverse (302810531), we get a palindrome (437828734).

The spelling of 135018203 in words is "one hundred thirty-five million, eighteen thousand, two hundred three".