135287813 has 16 divisors (see below), whose sum is σ = 146895360. Its totient is φ = 124286400.

The previous prime is 135287797. The next prime is 135287821. The reversal of 135287813 is 318782531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 135287813 - 2⁴ = 135287797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135287833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53606 + ... + 56072.

It is an arithmetic number, because the mean of its divisors is an integer number (9180960).

Almost surely, 2^135287813 is an apocalyptic number.

It is an amenable number.

135287813 is a deficient number, since it is larger than the sum of its proper divisors (11607547).

135287813 is a wasteful number, since it uses less digits than its factorization.

135287813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588.

The product of its digits is 40320, while the sum is 38.

The square root of 135287813 is about 11631.3289438482. The cubic root of 135287813 is about 513.3570832418.

The spelling of 135287813 in words is "one hundred thirty-five million, two hundred eighty-seven thousand, eight hundred thirteen".