135115385 has 4 divisors (see below), whose sum is σ = 162138468. Its totient is φ = 108092304.

The previous prime is 135115373. The next prime is 135115397. The reversal of 135115385 is 583511531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583511531 = 1091 ⋅534841.

It is an interprime number because it is at equal distance from previous prime (135115373) and next prime (135115397).

It can be written as a sum of positive squares in 2 ways, for example, as 63425296 + 71690089 = 7964^2 + 8467^2 .

It is a cyclic number.

It is not a de Polignac number, because 135115385 - 2⁸ = 135115129 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13511534 + ... + 13511543.

It is an arithmetic number, because the mean of its divisors is an integer number (40534617).

Almost surely, 2^135115385 is an apocalyptic number.

It is an amenable number.

135115385 is a deficient number, since it is larger than the sum of its proper divisors (27023083).

135115385 is an equidigital number, since it uses as much as digits as its factorization.

135115385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27023082.

The product of its digits is 9000, while the sum is 32.

The square root of 135115385 is about 11623.9143579089. The cubic root of 135115385 is about 513.1388946613.

The spelling of 135115385 in words is "one hundred thirty-five million, one hundred fifteen thousand, three hundred eighty-five".