136023523 has 4 divisors (see below), whose sum is σ = 136109160. Its totient is φ = 135937888.

The previous prime is 136023521. The next prime is 136023529. The reversal of 136023523 is 325320631.

It is a happy number.

136023523 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.

It is a cyclic number.

It is not a de Polignac number, because 136023523 - 2¹ = 136023521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136023521) 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, 40390 + ... + 43627.

It is an arithmetic number, because the mean of its divisors is an integer number (34027290).

Almost surely, 2^136023523 is an apocalyptic number.

136023523 is a deficient number, since it is larger than the sum of its proper divisors (85637).

136023523 is an equidigital number, since it uses as much as digits as its factorization.

136023523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85636.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 136023523 is about 11662.9122863889. The cubic root of 136023523 is about 514.2859655679.

The spelling of 136023523 in words is "one hundred thirty-six million, twenty-three thousand, five hundred twenty-three".