135320211 has 24 divisors (see below), whose sum is σ = 216194160. Its totient is φ = 81020736.

The previous prime is 135320197. The next prime is 135320231. The reversal of 135320211 is 112023531.

135320211 is a `hidden beast` number, since 135 + 320 + 211 = 666.

It is not a de Polignac number, because 135320211 - 2¹⁵ = 135287443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135320231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11301 + ... + 19958.

It is an arithmetic number, because the mean of its divisors is an integer number (9008090).

Almost surely, 2^135320211 is an apocalyptic number.

135320211 is a deficient number, since it is larger than the sum of its proper divisors (80873949).

135320211 is a wasteful number, since it uses less digits than its factorization.

135320211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31315 (or 31312 counting only the distinct ones).

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

The square root of 135320211 is about 11632.7215646211. The cubic root of 135320211 is about 513.3980586383.

Adding to 135320211 its reverse (112023531), we get a palindrome (247343742).

It can be divided in two parts, 135320 and 211, that added together give a palindrome (135531).

The spelling of 135320211 in words is "one hundred thirty-five million, three hundred twenty thousand, two hundred eleven".