136243911 has 8 divisors (see below), whose sum is σ = 182600560. Its totient is φ = 90358272.

The previous prime is 136243907. The next prime is 136243931. The reversal of 136243911 is 119342631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136243911 - 2² = 136243907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136243931) 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, 117076 + ... + 118233.

It is an arithmetic number, because the mean of its divisors is an integer number (22825070).

Almost surely, 2^136243911 is an apocalyptic number.

136243911 is a deficient number, since it is larger than the sum of its proper divisors (46356649).

136243911 is a wasteful number, since it uses less digits than its factorization.

136243911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235505.

The product of its digits is 3888, while the sum is 30.

The square root of 136243911 is about 11672.3567029114. The cubic root of 136243911 is about 514.5635677912.

The spelling of 136243911 in words is "one hundred thirty-six million, two hundred forty-three thousand, nine hundred eleven".