135505324231 has 2 divisors, whose sum is σ = 135505324232. Its totient is φ = 135505324230.

The previous prime is 135505324219. The next prime is 135505324261. The reversal of 135505324231 is 132423505531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135505324231 - 2⁹ = 135505323719 is a prime.

It is a super-2 number, since 2×135505324231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135505324261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67752662115 + 67752662116.

It is an arithmetic number, because the mean of its divisors is an integer number (67752662116).

Almost surely, 2^135505324231 is an apocalyptic number.

135505324231 is a deficient number, since it is larger than the sum of its proper divisors (1).

135505324231 is an equidigital number, since it uses as much as digits as its factorization.

135505324231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 135505324231 its reverse (132423505531), we get a palindrome (267928829762).

The spelling of 135505324231 in words is "one hundred thirty-five billion, five hundred five million, three hundred twenty-four thousand, two hundred thirty-one".