136518023 has 2 divisors, whose sum is σ = 136518024. Its totient is φ = 136518022.

The previous prime is 136518013. The next prime is 136518029. The reversal of 136518023 is 320815631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136518023 - 2⁶ = 136517959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136518029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68259011 + 68259012.

It is an arithmetic number, because the mean of its divisors is an integer number (68259012).

Almost surely, 2^136518023 is an apocalyptic number.

136518023 is a deficient number, since it is larger than the sum of its proper divisors (1).

136518023 is an equidigital number, since it uses as much as digits as its factorization.

136518023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 136518023 is about 11684.0927332849. The cubic root of 136518023 is about 514.9084237208.

The spelling of 136518023 in words is "one hundred thirty-six million, five hundred eighteen thousand, twenty-three".