136815113 has 4 divisors (see below), whose sum is σ = 137068548. Its totient is φ = 136561680.

The previous prime is 136815103. The next prime is 136815149. The reversal of 136815113 is 311518631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311518631 = 613 ⋅508187.

It can be written as a sum of positive squares in 2 ways, for example, as 47927929 + 88887184 = 6923^2 + 9428^2 .

It is a cyclic number.

It is not a de Polignac number, because 136815113 - 2²² = 132620809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136815103) 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, 125906 + ... + 126987.

It is an arithmetic number, because the mean of its divisors is an integer number (34267137).

Almost surely, 2^136815113 is an apocalyptic number.

It is an amenable number.

136815113 is a deficient number, since it is larger than the sum of its proper divisors (253435).

136815113 is an equidigital number, since it uses as much as digits as its factorization.

136815113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253434.

The product of its digits is 2160, while the sum is 29.

The square root of 136815113 is about 11696.7992630463. The cubic root of 136815113 is about 515.2816670161.

The spelling of 136815113 in words is "one hundred thirty-six million, eight hundred fifteen thousand, one hundred thirteen".