135423211 has 24 divisors (see below), whose sum is σ = 175881024. Its totient is φ = 103052880.

The previous prime is 135423187. The next prime is 135423229. The reversal of 135423211 is 112324531.

It is a happy number.

It is not a de Polignac number, because 135423211 - 2⁵ = 135423179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135423271) 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, 20256 + ... + 26098.

It is an arithmetic number, because the mean of its divisors is an integer number (7328376).

Almost surely, 2^135423211 is an apocalyptic number.

135423211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135423211 is a deficient number, since it is larger than the sum of its proper divisors (40457813).

135423211 is a wasteful number, since it uses less digits than its factorization.

135423211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911 (or 5904 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 135423211 is about 11637.1478894100. The cubic root of 135423211 is about 513.5282845389.

Adding to 135423211 its reverse (112324531), we get a palindrome (247747742).

The spelling of 135423211 in words is "one hundred thirty-five million, four hundred twenty-three thousand, two hundred eleven".