135207311 has 2 divisors, whose sum is σ = 135207312. Its totient is φ = 135207310.

The previous prime is 135207277. The next prime is 135207313. The reversal of 135207311 is 113702531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135207311 is a prime.

Together with 135207313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135207313) 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 as a sum of consecutive naturals, namely, 67603655 + 67603656.

It is an arithmetic number, because the mean of its divisors is an integer number (67603656).

Almost surely, 2^135207311 is an apocalyptic number.

135207311 is a deficient number, since it is larger than the sum of its proper divisors (1).

135207311 is an equidigital number, since it uses as much as digits as its factorization.

135207311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 135207311 is about 11627.8678613063. The cubic root of 135207311 is about 513.2552399427.

Adding to 135207311 its reverse (113702531), we get a palindrome (248909842).

The spelling of 135207311 in words is "one hundred thirty-five million, two hundred seven thousand, three hundred eleven".