135435321 has 24 divisors (see below), whose sum is σ = 231859264. Its totient is φ = 77390640.

The previous prime is 135435319. The next prime is 135435347. The reversal of 135435321 is 123534531.

It is not a de Polignac number, because 135435321 - 2¹ = 135435319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (135435301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38110 + ... + 41511.

Almost surely, 2^135435321 is an apocalyptic number.

It is an amenable number.

135435321 is a deficient number, since it is larger than the sum of its proper divisors (96423943).

135435321 is an frugal number, since it uses more digits than its factorization.

135435321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79643 (or 79631 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 135435321 is about 11637.6681942733. The cubic root of 135435321 is about 513.5435912260.

Adding to 135435321 its reverse (123534531), we get a palindrome (258969852).

The spelling of 135435321 in words is "one hundred thirty-five million, four hundred thirty-five thousand, three hundred twenty-one".