135423571 has 2 divisors, whose sum is σ = 135423572. Its totient is φ = 135423570.

The previous prime is 135423569. The next prime is 135423577. The reversal of 135423571 is 175324531.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (175324531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135423571 - 2¹ = 135423569 is a prime.

Together with 135423569, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135423577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67711785 + 67711786.

It is an arithmetic number, because the mean of its divisors is an integer number (67711786).

Almost surely, 2^135423571 is an apocalyptic number.

135423571 is a deficient number, since it is larger than the sum of its proper divisors (1).

135423571 is an equidigital number, since it uses as much as digits as its factorization.

135423571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 31.

The square root of 135423571 is about 11637.1633571073. The cubic root of 135423571 is about 513.5287395815.

The spelling of 135423571 in words is "one hundred thirty-five million, four hundred twenty-three thousand, five hundred seventy-one".