13243123 has 4 divisors (see below), whose sum is σ = 13566168. Its totient is φ = 12920080.

The previous prime is 13243121. The next prime is 13243127. The reversal of 13243123 is 32134231.

13243123 is digitally balanced in base 2 and base 3, because in such bases 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: 32134231 = 173 ⋅185747.

It is a cyclic number.

It is not a de Polignac number, because 13243123 - 2¹ = 13243121 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 13243123.

It is not an unprimeable number, because it can be changed into a prime (13243121) 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, 161461 + ... + 161542.

It is an arithmetic number, because the mean of its divisors is an integer number (3391542).

Almost surely, 2^13243123 is an apocalyptic number.

13243123 is a deficient number, since it is larger than the sum of its proper divisors (323045).

13243123 is an equidigital number, since it uses as much as digits as its factorization.

13243123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323044.

The product of its digits is 432, while the sum is 19.

The square root of 13243123 is about 3639.1101934401. The cubic root of 13243123 is about 236.5902287920.

Adding to 13243123 its reverse (32134231), we get a palindrome (45377354).

It can be divided in two parts, 13243 and 123, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 13243123 in words is "thirteen million, two hundred forty-three thousand, one hundred twenty-three".