136107209 has 8 divisors (see below), whose sum is σ = 155625408. Its totient is φ = 116607600.

The previous prime is 136107197. The next prime is 136107211. The reversal of 136107209 is 902701631.

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 136107209 - 2⁴ = 136107193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136107229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19259 + ... + 25359.

It is an arithmetic number, because the mean of its divisors is an integer number (19453176).

Almost surely, 2^136107209 is an apocalyptic number.

It is an amenable number.

136107209 is a deficient number, since it is larger than the sum of its proper divisors (19518199).

136107209 is an equidigital number, since it uses as much as digits as its factorization.

136107209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9295.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 136107209 is about 11666.4994321347. The cubic root of 136107209 is about 514.3914123102.

The spelling of 136107209 in words is "one hundred thirty-six million, one hundred seven thousand, two hundred nine".