12431504 has 10 divisors (see below), whose sum is σ = 24086070. Its totient is φ = 6215744.

The previous prime is 12431501. The next prime is 12431513. The reversal of 12431504 is 40513421.

It can be written as a sum of positive squares in only one way, i.e., 9935104 + 2496400 = 3152^2 + 1580^2 .

It is not an unprimeable number, because it can be changed into a prime (12431501) 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 as a sum of consecutive naturals, namely, 388469 + ... + 388500.

It is an arithmetic number, because the mean of its divisors is an integer number (2408607).

Almost surely, 2^12431504 is an apocalyptic number.

It is an amenable number.

12431504 is a deficient number, since it is larger than the sum of its proper divisors (11654566).

12431504 is an equidigital number, since it uses as much as digits as its factorization.

12431504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776977 (or 776971 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12431504 is about 3525.8338020956. The cubic root of 12431504 is about 231.6547579982.

Adding to 12431504 its reverse (40513421), we get a palindrome (52944925).

The spelling of 12431504 in words is "twelve million, four hundred thirty-one thousand, five hundred four".