136131269 has 2 divisors, whose sum is σ = 136131270. Its totient is φ = 136131268.

The previous prime is 136131263. The next prime is 136131271. The reversal of 136131269 is 962131631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105472900 + 30658369 = 10270^2 + 5537^2 .

It is a cyclic number.

It is not a de Polignac number, because 136131269 - 2²⁰ = 135082693 is a prime.

It is a super-2 number, since 2×136131269² = 37063444799100722, which contains 22 as substring.

Together with 136131271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136131263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68065634 + 68065635.

It is an arithmetic number, because the mean of its divisors is an integer number (68065635).

Almost surely, 2^136131269 is an apocalyptic number.

It is an amenable number.

136131269 is a deficient number, since it is larger than the sum of its proper divisors (1).

136131269 is an equidigital number, since it uses as much as digits as its factorization.

136131269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 136131269 is about 11667.5305442069. The cubic root of 136131269 is about 514.4217205950.

The spelling of 136131269 in words is "one hundred thirty-six million, one hundred thirty-one thousand, two hundred sixty-nine".