135223 has 8 divisors (see below), whose sum is σ = 155520. Its totient is φ = 116280.

The previous prime is 135221. The next prime is 135241. The reversal of 135223 is 322531.

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

It is not a de Polignac number, because 135223 - 2¹ = 135221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135197 and 135206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115 + ... + 532.

It is an arithmetic number, because the mean of its divisors is an integer number (19440).

2¹³⁵²²³ is an apocalyptic number.

135223 is a deficient number, since it is larger than the sum of its proper divisors (20297).

135223 is a wasteful number, since it uses less digits than its factorization.

135223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its digits is 180, while the sum is 16.

The square root of 135223 is about 367.7268007638. The cubic root of 135223 is about 51.3275091310.

Adding to 135223 its reverse (322531), we get a palindrome (457754).

The spelling of 135223 in words is "one hundred thirty-five thousand, two hundred twenty-three".