135213433 has 4 divisors (see below), whose sum is σ = 135237220. Its totient is φ = 135189648.

The previous prime is 135213431. The next prime is 135213467. The reversal of 135213433 is 334312531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13155129 + 122058304 = 3627^2 + 11048^2 .

It is a cyclic number.

It is not a de Polignac number, because 135213433 - 2¹ = 135213431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135213398 and 135213407.

It is not an unprimeable number, because it can be changed into a prime (135213431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203 + ... + 16591.

It is an arithmetic number, because the mean of its divisors is an integer number (33809305).

Almost surely, 2^135213433 is an apocalyptic number.

It is an amenable number.

135213433 is a deficient number, since it is larger than the sum of its proper divisors (23787).

135213433 is an equidigital number, since it uses as much as digits as its factorization.

135213433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23786.

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

The square root of 135213433 is about 11628.1311052120. The cubic root of 135213433 is about 513.2629863216.

Adding to 135213433 its reverse (334312531), we get a palindrome (469525964).

The spelling of 135213433 in words is "one hundred thirty-five million, two hundred thirteen thousand, four hundred thirty-three".