135211206 has 32 divisors (see below), whose sum is σ = 291836160. Its totient is φ = 41516064.

The previous prime is 135211199. The next prime is 135211207. The reversal of 135211206 is 602112531.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135211207) 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 15 ways as a sum of consecutive naturals, for example, 42375 + ... + 45453.

It is an arithmetic number, because the mean of its divisors is an integer number (9119880).

Almost surely, 2^135211206 is an apocalyptic number.

135211206 is an abundant number, since it is smaller than the sum of its proper divisors (156624954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135211206 is a wasteful number, since it uses less digits than its factorization.

135211206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 135211206 is about 11628.0353456635. The cubic root of 135211206 is about 513.2601684483.

Adding to 135211206 its reverse (602112531), we get a palindrome (737323737).

The spelling of 135211206 in words is "one hundred thirty-five million, two hundred eleven thousand, two hundred six".