136518323 has 4 divisors (see below), whose sum is σ = 136565688. Its totient is φ = 136470960.

The previous prime is 136518311. The next prime is 136518331. The reversal of 136518323 is 323815631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323815631 = 257 ⋅1259983.

It is a cyclic number.

It is not a de Polignac number, because 136518323 - 2⁶ = 136518259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136518323.

It is not an unprimeable number, because it can be changed into a prime (136518023) 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, 19058 + ... + 25223.

It is an arithmetic number, because the mean of its divisors is an integer number (34141422).

Almost surely, 2^136518323 is an apocalyptic number.

136518323 is a deficient number, since it is larger than the sum of its proper divisors (47365).

136518323 is an equidigital number, since it uses as much as digits as its factorization.

136518323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47364.

The product of its digits is 12960, while the sum is 32.

The square root of 136518323 is about 11684.1055712451. The cubic root of 136518323 is about 514.9088008930.

The spelling of 136518323 in words is "one hundred thirty-six million, five hundred eighteen thousand, three hundred twenty-three".