135205671 has 16 divisors (see below), whose sum is σ = 182647520. Its totient is φ = 88957440.

The previous prime is 135205669. The next prime is 135205673. The reversal of 135205671 is 176502531.

It is an interprime number because it is at equal distance from previous prime (135205669) and next prime (135205673).

It is not a de Polignac number, because 135205671 - 2¹ = 135205669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135205673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101691 + ... + 103011.

It is an arithmetic number, because the mean of its divisors is an integer number (11415470).

Almost surely, 2^135205671 is an apocalyptic number.

135205671 is a deficient number, since it is larger than the sum of its proper divisors (47441849).

135205671 is a wasteful number, since it uses less digits than its factorization.

135205671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 135205671 is about 11627.7973408552. The cubic root of 135205671 is about 513.2531647542.

It can be divided in two parts, 13520 and 5671, that added together give a palindrome (19191).

The spelling of 135205671 in words is "one hundred thirty-five million, two hundred five thousand, six hundred seventy-one".