135512347 has 4 divisors (see below), whose sum is σ = 136261216. Its totient is φ = 134763480.

The previous prime is 135512329. The next prime is 135512359. The reversal of 135512347 is 743215531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743215531 = 131 ⋅5673401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135512347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135512387) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 374163 + ... + 374524.

It is an arithmetic number, because the mean of its divisors is an integer number (34065304).

Almost surely, 2^135512347 is an apocalyptic number.

135512347 is a deficient number, since it is larger than the sum of its proper divisors (748869).

135512347 is an equidigital number, since it uses as much as digits as its factorization.

135512347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748868.

The product of its digits is 12600, while the sum is 31.

The square root of 135512347 is about 11640.9770638035. The cubic root of 135512347 is about 513.6409284933.

Adding to 135512347 its reverse (743215531), we get a palindrome (878727878).

The spelling of 135512347 in words is "one hundred thirty-five million, five hundred twelve thousand, three hundred forty-seven".