136531255 has 8 divisors (see below), whose sum is σ = 187242912. Its totient is φ = 93621408.

The previous prime is 136531249. The next prime is 136531259. The reversal of 136531255 is 552135631.

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

It is a cyclic number.

It is not a de Polignac number, because 136531255 - 2⁹ = 136530743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136531259) 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, 1950412 + ... + 1950481.

It is an arithmetic number, because the mean of its divisors is an integer number (23405364).

Almost surely, 2^136531255 is an apocalyptic number.

136531255 is a deficient number, since it is larger than the sum of its proper divisors (50711657).

136531255 is an equidigital number, since it uses as much as digits as its factorization.

136531255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900905.

The product of its digits is 13500, while the sum is 31.

The square root of 136531255 is about 11684.6589595075. The cubic root of 136531255 is about 514.9250590046.

Adding to 136531255 its reverse (552135631), we get a palindrome (688666886).

The spelling of 136531255 in words is "one hundred thirty-six million, five hundred thirty-one thousand, two hundred fifty-five".