168013135 has 4 divisors (see below), whose sum is σ = 201615768. Its totient is φ = 134410504.

The previous prime is 168013123. The next prime is 168013163. The reversal of 168013135 is 531310861.

168013135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168013135 - 2¹¹ = 168011087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16801309 + ... + 16801318.

It is an arithmetic number, because the mean of its divisors is an integer number (50403942).

Almost surely, 2^168013135 is an apocalyptic number.

168013135 is a deficient number, since it is larger than the sum of its proper divisors (33602633).

168013135 is an equidigital number, since it uses as much as digits as its factorization.

168013135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33602632.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 168013135 is about 12961.9880805376. The cubic root of 168013135 is about 551.7992152463.

Adding to 168013135 its reverse (531310861), we get a palindrome (699323996).

The spelling of 168013135 in words is "one hundred sixty-eight million, thirteen thousand, one hundred thirty-five".