136320211 has 4 divisors (see below), whose sum is σ = 137725672. Its totient is φ = 134914752.

The previous prime is 136320181. The next prime is 136320311. The reversal of 136320211 is 112023631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112023631 = 991 ⋅113041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136320211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136320311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702585 + ... + 702778.

It is an arithmetic number, because the mean of its divisors is an integer number (34431418).

Almost surely, 2^136320211 is an apocalyptic number.

136320211 is a deficient number, since it is larger than the sum of its proper divisors (1405461).

136320211 is an equidigital number, since it uses as much as digits as its factorization.

136320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405460.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 136320211 is about 11675.6246513838. The cubic root of 136320211 is about 514.6596060242.

Adding to 136320211 its reverse (112023631), we get a palindrome (248343842).

The spelling of 136320211 in words is "one hundred thirty-six million, three hundred twenty thousand, two hundred eleven".