135343213 has 4 divisors (see below), whose sum is σ = 142466560. Its totient is φ = 128219868.

The previous prime is 135343193. The next prime is 135343237. The reversal of 135343213 is 312343531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135343213 - 2²⁵ = 101788781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135343513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3561645 + ... + 3561682.

It is an arithmetic number, because the mean of its divisors is an integer number (35616640).

Almost surely, 2^135343213 is an apocalyptic number.

It is an amenable number.

135343213 is a deficient number, since it is larger than the sum of its proper divisors (7123347).

135343213 is an equidigital number, since it uses as much as digits as its factorization.

135343213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7123346.

The product of its digits is 3240, while the sum is 25.

The square root of 135343213 is about 11633.7101992443. The cubic root of 135343213 is about 513.4271464663.

Adding to 135343213 its reverse (312343531), we get a palindrome (447686744).

The spelling of 135343213 in words is "one hundred thirty-five million, three hundred forty-three thousand, two hundred thirteen".