136211081 has 2 divisors, whose sum is σ = 136211082. Its totient is φ = 136211080.

The previous prime is 136211071. The next prime is 136211093. The reversal of 136211081 is 180112631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98327056 + 37884025 = 9916^2 + 6155^2 .

It is a cyclic number.

It is not a de Polignac number, because 136211081 - 2¹⁰ = 136210057 is a prime.

It is a super-3 number, since 3×136211081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136211041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68105540 + 68105541.

It is an arithmetic number, because the mean of its divisors is an integer number (68105541).

Almost surely, 2^136211081 is an apocalyptic number.

It is an amenable number.

136211081 is a deficient number, since it is larger than the sum of its proper divisors (1).

136211081 is an equidigital number, since it uses as much as digits as its factorization.

136211081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 136211081 is about 11670.9503040669. The cubic root of 136211081 is about 514.5222338852.

The spelling of 136211081 in words is "one hundred thirty-six million, two hundred eleven thousand, eighty-one".