135318 has 16 divisors (see below), whose sum is σ = 285120. Its totient is φ = 42696.

The previous prime is 135301. The next prime is 135319. The reversal of 135318 is 813531.

It is a happy number.

It is a super-2 number, since 2×135318² = 36621922248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135294 and 135303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135319) 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, 480 + ... + 707.

It is an arithmetic number, because the mean of its divisors is an integer number (17820).

2¹³⁵³¹⁸ is an apocalyptic number.

135318 is an abundant number, since it is smaller than the sum of its proper divisors (149802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135318 is a wasteful number, since it uses less digits than its factorization.

135318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211.

The product of its digits is 360, while the sum is 21.

The square root of 135318 is about 367.8559500674. The cubic root of 135318 is about 51.3395262482.

Adding to 135318 its reverse (813531), we get a palindrome (948849).

The spelling of 135318 in words is "one hundred thirty-five thousand, three hundred eighteen".