136131565 has 8 divisors (see below), whose sum is σ = 166036248. Its totient is φ = 107119680.

The previous prime is 136131559. The next prime is 136131581. The reversal of 136131565 is 565131631.

It can be written as a sum of positive squares in 4 ways, for example, as 16491721 + 119639844 = 4061^2 + 10938^2 .

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

It is not a de Polignac number, because 136131565 - 2⁵ = 136131533 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 7 ways as a sum of consecutive naturals, for example, 222862 + ... + 223471.

It is an arithmetic number, because the mean of its divisors is an integer number (20754531).

Almost surely, 2^136131565 is an apocalyptic number.

It is an amenable number.

136131565 is a deficient number, since it is larger than the sum of its proper divisors (29904683).

136131565 is an equidigital number, since it uses as much as digits as its factorization.

136131565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446399.

The product of its digits is 8100, while the sum is 31.

The square root of 136131565 is about 11667.5432289750. The cubic root of 136131565 is about 514.4220934428.

The spelling of 136131565 in words is "one hundred thirty-six million, one hundred thirty-one thousand, five hundred sixty-five".