135523163 has 8 divisors (see below), whose sum is σ = 139191696. Its totient is φ = 131872000.

The previous prime is 135523139. The next prime is 135523169. The reversal of 135523163 is 361325531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135523163 - 2¹⁰ = 135522139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135523169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12320 + ... + 20562.

It is an arithmetic number, because the mean of its divisors is an integer number (17398962).

Almost surely, 2^135523163 is an apocalyptic number.

135523163 is a deficient number, since it is larger than the sum of its proper divisors (3668533).

135523163 is an equidigital number, since it uses as much as digits as its factorization.

135523163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8685.

The product of its digits is 8100, while the sum is 29.

The square root of 135523163 is about 11641.4416203493. The cubic root of 135523163 is about 513.6545936502.

Adding to 135523163 its reverse (361325531), we get a palindrome (496848694).

The spelling of 135523163 in words is "one hundred thirty-five million, five hundred twenty-three thousand, one hundred sixty-three".