136387211 has 2 divisors, whose sum is σ = 136387212. Its totient is φ = 136387210.

The previous prime is 136387189. The next prime is 136387213. The reversal of 136387211 is 112783631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136387211 is a prime.

Together with 136387213, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_7719413 and since 136387211 and 7719413 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (136387213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68193605 + 68193606.

It is an arithmetic number, because the mean of its divisors is an integer number (68193606).

Almost surely, 2^136387211 is an apocalyptic number.

136387211 is a deficient number, since it is larger than the sum of its proper divisors (1).

136387211 is an equidigital number, since it uses as much as digits as its factorization.

136387211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 136387211 is about 11678.4935244234. The cubic root of 136387211 is about 514.7439088718.

The spelling of 136387211 in words is "one hundred thirty-six million, three hundred eighty-seven thousand, two hundred eleven".