136236423 has 4 divisors (see below), whose sum is σ = 181648568. Its totient is φ = 90824280.

The previous prime is 136236407. The next prime is 136236431. The reversal of 136236423 is 324632631.

136236423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324632631 = 3 ⋅108210877.

It is not a de Polignac number, because 136236423 - 2⁴ = 136236407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136236473) 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, 22706068 + ... + 22706073.

It is an arithmetic number, because the mean of its divisors is an integer number (45412142).

Almost surely, 2^136236423 is an apocalyptic number.

136236423 is a deficient number, since it is larger than the sum of its proper divisors (45412145).

136236423 is an equidigital number, since it uses as much as digits as its factorization.

136236423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45412144.

The product of its digits is 15552, while the sum is 30.

The square root of 136236423 is about 11672.0359406575. The cubic root of 136236423 is about 514.5541407703.

The spelling of 136236423 in words is "one hundred thirty-six million, two hundred thirty-six thousand, four hundred twenty-three".