136523023 has 16 divisors (see below), whose sum is σ = 168307776. Its totient is φ = 107838720.

The previous prime is 136523017. The next prime is 136523027. The reversal of 136523023 is 320325631.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 136523023 - 2¹⁷ = 136391951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136523027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91443 + ... + 92923.

It is an arithmetic number, because the mean of its divisors is an integer number (10519236).

Almost surely, 2^136523023 is an apocalyptic number.

136523023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

136523023 is a deficient number, since it is larger than the sum of its proper divisors (31784753).

136523023 is a wasteful number, since it uses less digits than its factorization.

136523023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

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

The square root of 136523023 is about 11684.3066974468. The cubic root of 136523023 is about 514.9147098522.

Adding to 136523023 its reverse (320325631), we get a palindrome (456848654).

The spelling of 136523023 in words is "one hundred thirty-six million, five hundred twenty-three thousand, twenty-three".