135210213 has 12 divisors (see below), whose sum is σ = 205583040. Its totient is φ = 85395816.

The previous prime is 135210191. The next prime is 135210217. The reversal of 135210213 is 312012531.

It is not a de Polignac number, because 135210213 - 2⁵ = 135210181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135210217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395181 + ... + 395522.

It is an arithmetic number, because the mean of its divisors is an integer number (17131920).

Almost surely, 2^135210213 is an apocalyptic number.

It is an amenable number.

135210213 is a deficient number, since it is larger than the sum of its proper divisors (70372827).

135210213 is a wasteful number, since it uses less digits than its factorization.

135210213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790728 (or 790725 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 135210213 is about 11627.9926470565. The cubic root of 135210213 is about 513.2589119731.

Adding to 135210213 its reverse (312012531), we get a palindrome (447222744).

The spelling of 135210213 in words is "one hundred thirty-five million, two hundred ten thousand, two hundred thirteen".