12431873 has 4 divisors (see below), whose sum is σ = 12440148. Its totient is φ = 12423600.

The previous prime is 12431857. The next prime is 12431893. The reversal of 12431873 is 37813421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37813421 = 139 ⋅272039.

It can be written as a sum of positive squares in 2 ways, for example, as 5071504 + 7360369 = 2252^2 + 2713^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431873 - 2⁴ = 12431857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12431803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178 + ... + 5123.

It is an arithmetic number, because the mean of its divisors is an integer number (3110037).

Almost surely, 2^12431873 is an apocalyptic number.

It is an amenable number.

12431873 is a deficient number, since it is larger than the sum of its proper divisors (8275).

12431873 is an equidigital number, since it uses as much as digits as its factorization.

12431873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8274.

The product of its digits is 4032, while the sum is 29.

The square root of 12431873 is about 3525.8861297552. The cubic root of 12431873 is about 231.6570500180.

The spelling of 12431873 in words is "twelve million, four hundred thirty-one thousand, eight hundred seventy-three".