136009871 has 2 divisors, whose sum is σ = 136009872. Its totient is φ = 136009870.

The previous prime is 136009831. The next prime is 136009921. The reversal of 136009871 is 178900631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136009871 - 2⁶ = 136009807 is a prime.

It is a super-3 number, since 3×136009871³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136009831) 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 as a sum of consecutive naturals, namely, 68004935 + 68004936.

It is an arithmetic number, because the mean of its divisors is an integer number (68004936).

Almost surely, 2^136009871 is an apocalyptic number.

136009871 is a deficient number, since it is larger than the sum of its proper divisors (1).

136009871 is an equidigital number, since it uses as much as digits as its factorization.

136009871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 136009871 is about 11662.3269976450. The cubic root of 136009871 is about 514.2687595564.

The spelling of 136009871 in words is "one hundred thirty-six million, nine thousand, eight hundred seventy-one".