12105523 has 2 divisors, whose sum is σ = 12105524. Its totient is φ = 12105522.

The previous prime is 12105491. The next prime is 12105529. The reversal of 12105523 is 32550121.

12105523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12105523 - 2⁵ = 12105491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12105523.

It is not a weakly prime, because it can be changed into another prime (12105529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6052761 + 6052762.

It is an arithmetic number, because the mean of its divisors is an integer number (6052762).

Almost surely, 2^12105523 is an apocalyptic number.

12105523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12105523 is an equidigital number, since it uses as much as digits as its factorization.

12105523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12105523 is about 3479.2992110481. The cubic root of 12105523 is about 229.6119670158.

Adding to 12105523 its reverse (32550121), we get a palindrome (44655644).

The spelling of 12105523 in words is "twelve million, one hundred five thousand, five hundred twenty-three".