136404113 has 4 divisors (see below), whose sum is σ = 138640308. Its totient is φ = 134167920.

The previous prime is 136404067. The next prime is 136404131. The reversal of 136404113 is 311404631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66129424 + 70274689 = 8132^2 + 8383^2 .

It is a cyclic number.

It is not a de Polignac number, because 136404113 - 2⁶ = 136404049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136404133) 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, 1118006 + ... + 1118127.

It is an arithmetic number, because the mean of its divisors is an integer number (34660077).

Almost surely, 2^136404113 is an apocalyptic number.

It is an amenable number.

136404113 is a deficient number, since it is larger than the sum of its proper divisors (2236195).

136404113 is an equidigital number, since it uses as much as digits as its factorization.

136404113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236194.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 136404113 is about 11679.2171398600. The cubic root of 136404113 is about 514.7651714768.

Adding to 136404113 its reverse (311404631), we get a palindrome (447808744).

The spelling of 136404113 in words is "one hundred thirty-six million, four hundred four thousand, one hundred thirteen".