136317523 has 2 divisors, whose sum is σ = 136317524. Its totient is φ = 136317522.

The previous prime is 136317469. The next prime is 136317547. The reversal of 136317523 is 325713631.

It is a strong prime.

It is an emirp because it is prime and its reverse (325713631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136317523 - 2⁹ = 136317011 is a prime.

It is not a weakly prime, because it can be changed into another prime (136317593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68158761 + 68158762.

It is an arithmetic number, because the mean of its divisors is an integer number (68158762).

Almost surely, 2^136317523 is an apocalyptic number.

136317523 is a deficient number, since it is larger than the sum of its proper divisors (1).

136317523 is an equidigital number, since it uses as much as digits as its factorization.

136317523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 31.

The square root of 136317523 is about 11675.5095392021. The cubic root of 136317523 is about 514.6562232680.

The spelling of 136317523 in words is "one hundred thirty-six million, three hundred seventeen thousand, five hundred twenty-three".