136347247 has 2 divisors, whose sum is σ = 136347248. Its totient is φ = 136347246.

The previous prime is 136347229. The next prime is 136347251. The reversal of 136347247 is 742743631.

136347247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136347247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136347347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68173623 + 68173624.

It is an arithmetic number, because the mean of its divisors is an integer number (68173624).

Almost surely, 2^136347247 is an apocalyptic number.

136347247 is a deficient number, since it is larger than the sum of its proper divisors (1).

136347247 is an equidigital number, since it uses as much as digits as its factorization.

136347247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 37.

The square root of 136347247 is about 11676.7823907102. The cubic root of 136347247 is about 514.6936274341.

The spelling of 136347247 in words is "one hundred thirty-six million, three hundred forty-seven thousand, two hundred forty-seven".