136111091 has 2 divisors, whose sum is σ = 136111092. Its totient is φ = 136111090.

The previous prime is 136111051. The next prime is 136111109. The reversal of 136111091 is 190111631.

Together with next prime (136111109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136111091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136111051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68055545 + 68055546.

It is an arithmetic number, because the mean of its divisors is an integer number (68055546).

Almost surely, 2^136111091 is an apocalyptic number.

136111091 is a deficient number, since it is larger than the sum of its proper divisors (1).

136111091 is an equidigital number, since it uses as much as digits as its factorization.

136111091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 136111091 is about 11666.6658047619. The cubic root of 136111091 is about 514.3963026915.

The spelling of 136111091 in words is "one hundred thirty-six million, one hundred eleven thousand, ninety-one".