135311211 has 24 divisors (see below), whose sum is σ = 236512224. Its totient is φ = 72771840.

The previous prime is 135311207. The next prime is 135311213. The reversal of 135311211 is 112113531.

135311211 is a `hidden beast` number, since 13 + 531 + 121 + 1 = 666.

It is not a de Polignac number, because 135311211 - 2² = 135311207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135311213) 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 23 ways as a sum of consecutive naturals, for example, 62100 + ... + 64241.

It is an arithmetic number, because the mean of its divisors is an integer number (9854676).

Almost surely, 2^135311211 is an apocalyptic number.

135311211 is a deficient number, since it is larger than the sum of its proper divisors (101201013).

135311211 is a wasteful number, since it uses less digits than its factorization.

135311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126371 (or 126368 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 135311211 is about 11632.3347183616. The cubic root of 135311211 is about 513.3866765372.

Adding to 135311211 its reverse (112113531), we get a palindrome (247424742).

The spelling of 135311211 in words is "one hundred thirty-five million, three hundred eleven thousand, two hundred eleven".