135671 has 2 divisors, whose sum is σ = 135672. Its totient is φ = 135670.

The previous prime is 135661. The next prime is 135697. The reversal of 135671 is 176531.

It is a weak prime.

It is an emirp because it is prime and its reverse (176531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135671 - 2⁶ = 135607 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67835 + 67836.

It is an arithmetic number, because the mean of its divisors is an integer number (67836).

2¹³⁵⁶⁷¹ is an apocalyptic number.

135671 is a deficient number, since it is larger than the sum of its proper divisors (1).

135671 is an equidigital number, since it uses as much as digits as its factorization.

135671 is an evil number, because the sum of its binary digits is even.

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

The square root of 135671 is about 368.3354449412. The cubic root of 135671 is about 51.3841301115.

The spelling of 135671 in words is "one hundred thirty-five thousand, six hundred seventy-one".