135681135 has 8 divisors (see below), whose sum is σ = 217089840. Its totient is φ = 72363264.

The previous prime is 135681107. The next prime is 135681137. The reversal of 135681135 is 531186531.

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

It is not a de Polignac number, because 135681135 - 2⁵ = 135681103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135681096 and 135681105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135681137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4522690 + ... + 4522719.

It is an arithmetic number, because the mean of its divisors is an integer number (27136230).

Almost surely, 2^135681135 is an apocalyptic number.

135681135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135681135 is a deficient number, since it is larger than the sum of its proper divisors (81408705).

135681135 is an equidigital number, since it uses as much as digits as its factorization.

135681135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9045417.

The product of its digits is 10800, while the sum is 33.

The square root of 135681135 is about 11648.2245428220. The cubic root of 135681135 is about 513.8540959200.

The spelling of 135681135 in words is "one hundred thirty-five million, six hundred eighty-one thousand, one hundred thirty-five".