135433213 has 4 divisors (see below), whose sum is σ = 135457308. Its totient is φ = 135409120.

The previous prime is 135433201. The next prime is 135433241. The reversal of 135433213 is 312334531.

135433213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312334531 = 1217 ⋅256643.

It can be written as a sum of positive squares in 2 ways, for example, as 54199044 + 81234169 = 7362^2 + 9013^2 .

It is a cyclic number.

It is not a de Polignac number, because 135433213 - 2⁹ = 135432701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135433313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353 + ... + 16513.

It is an arithmetic number, because the mean of its divisors is an integer number (33864327).

Almost surely, 2^135433213 is an apocalyptic number.

It is an amenable number.

135433213 is a deficient number, since it is larger than the sum of its proper divisors (24095).

135433213 is an equidigital number, since it uses as much as digits as its factorization.

135433213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24094.

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

The square root of 135433213 is about 11637.5776259495. The cubic root of 135433213 is about 513.5409268410.

Adding to 135433213 its reverse (312334531), we get a palindrome (447767744).

The spelling of 135433213 in words is "one hundred thirty-five million, four hundred thirty-three thousand, two hundred thirteen".