136631255 has 4 divisors (see below), whose sum is σ = 163957512. Its totient is φ = 109305000.

The previous prime is 136631239. The next prime is 136631273. The reversal of 136631255 is 552136631.

136631255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552136631 = 4013 ⋅137587.

It is not a de Polignac number, because 136631255 - 2⁴ = 136631239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13663121 + ... + 13663130.

It is an arithmetic number, because the mean of its divisors is an integer number (40989378).

Almost surely, 2^136631255 is an apocalyptic number.

136631255 is a deficient number, since it is larger than the sum of its proper divisors (27326257).

136631255 is an equidigital number, since it uses as much as digits as its factorization.

136631255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27326256.

The product of its digits is 16200, while the sum is 32.

The square root of 136631255 is about 11688.9372913024. The cubic root of 136631255 is about 515.0507443636.

Adding to 136631255 its reverse (552136631), we get a palindrome (688767886).

The spelling of 136631255 in words is "one hundred thirty-six million, six hundred thirty-one thousand, two hundred fifty-five".