13623123 has 4 divisors (see below), whose sum is σ = 18164168. Its totient is φ = 9082080.

The previous prime is 13623101. The next prime is 13623149. The reversal of 13623123 is 32132631.

13623123 is digitally balanced in base 3, 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 not a de Polignac number, because 13623123 - 2⁶ = 13623059 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 13623123.

It is not an unprimeable number, because it can be changed into a prime (13623023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2270518 + ... + 2270523.

It is an arithmetic number, because the mean of its divisors is an integer number (4541042).

Almost surely, 2^13623123 is an apocalyptic number.

13623123 is a deficient number, since it is larger than the sum of its proper divisors (4541045).

13623123 is an equidigital number, since it uses as much as digits as its factorization.

13623123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4541044.

The product of its digits is 648, while the sum is 21.

The square root of 13623123 is about 3690.9515033389. The cubic root of 13623123 is about 238.8318407694.

Adding to 13623123 its reverse (32132631), we get a palindrome (45755754).

It can be divided in two parts, 136231 and 23, that multiplied together give a palindrome (3133313).

The spelling of 13623123 in words is "thirteen million, six hundred twenty-three thousand, one hundred twenty-three".