135801031271 has 2 divisors, whose sum is σ = 135801031272. Its totient is φ = 135801031270.

The previous prime is 135801031259. The next prime is 135801031273. The reversal of 135801031271 is 172130108531.

It is a strong prime.

It is an emirp because it is prime and its reverse (172130108531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135801031271 - 2¹⁰ = 135801030247 is a prime.

Together with 135801031273, 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 (135801031273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67900515635 + 67900515636.

It is an arithmetic number, because the mean of its divisors is an integer number (67900515636).

Almost surely, 2^135801031271 is an apocalyptic number.

135801031271 is a deficient number, since it is larger than the sum of its proper divisors (1).

135801031271 is an equidigital number, since it uses as much as digits as its factorization.

135801031271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 135801031271 in words is "one hundred thirty-five billion, eight hundred one million, thirty-one thousand, two hundred seventy-one".