135242311 has 2 divisors, whose sum is σ = 135242312. Its totient is φ = 135242310.

The previous prime is 135242299. The next prime is 135242321. The reversal of 135242311 is 113242531.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (113242531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135242311 - 2⁷ = 135242183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135242321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67621155 + 67621156.

It is an arithmetic number, because the mean of its divisors is an integer number (67621156).

Almost surely, 2^135242311 is an apocalyptic number.

135242311 is a deficient number, since it is larger than the sum of its proper divisors (1).

135242311 is an equidigital number, since it uses as much as digits as its factorization.

135242311 is an evil number, because the sum of its binary digits is even.

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

The square root of 135242311 is about 11629.3727689846. The cubic root of 135242311 is about 513.2995235036.

Adding to 135242311 its reverse (113242531), we get a palindrome (248484842).

The spelling of 135242311 in words is "one hundred thirty-five million, two hundred forty-two thousand, three hundred eleven".