135320305 has 8 divisors (see below), whose sum is σ = 163992744. Its totient is φ = 107184000.

The previous prime is 135320291. The next prime is 135320333. The reversal of 135320305 is 503023531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32764176 + 102556129 = 5724^2 + 10127^2 .

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

It is not a de Polignac number, because 135320305 - 2¹¹ = 135318257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 133476 + ... + 134485.

It is an arithmetic number, because the mean of its divisors is an integer number (20499093).

Almost surely, 2^135320305 is an apocalyptic number.

It is an amenable number.

135320305 is a deficient number, since it is larger than the sum of its proper divisors (28672439).

135320305 is a wasteful number, since it uses less digits than its factorization.

135320305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268067.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 135320305 is about 11632.7256049474. The cubic root of 135320305 is about 513.3981775153.

Adding to 135320305 its reverse (503023531), we get a palindrome (638343836).

The spelling of 135320305 in words is "one hundred thirty-five million, three hundred twenty thousand, three hundred five".