12173923 has 4 divisors (see below), whose sum is σ = 12703248. Its totient is φ = 11644600.

The previous prime is 12173899. The next prime is 12173933. The reversal of 12173923 is 32937121.

12173923 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, and also an emirpimes, since its reverse is a distinct semiprime: 32937121 = 7 ⋅4705303.

It is a cyclic number.

It is not a de Polignac number, because 12173923 - 2⁵ = 12173891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12173891 and 12173900.

It is not an unprimeable number, because it can be changed into a prime (12173933) 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, 264628 + ... + 264673.

It is an arithmetic number, because the mean of its divisors is an integer number (3175812).

Almost surely, 2^12173923 is an apocalyptic number.

12173923 is a deficient number, since it is larger than the sum of its proper divisors (529325).

12173923 is an equidigital number, since it uses as much as digits as its factorization.

12173923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529324.

The product of its digits is 2268, while the sum is 28.

The square root of 12173923 is about 3489.1149307525. The cubic root of 12173923 is about 230.0436149172.

The spelling of 12173923 in words is "twelve million, one hundred seventy-three thousand, nine hundred twenty-three".