12531424 has 24 divisors (see below), whose sum is σ = 24781680. Its totient is φ = 6237696.

The previous prime is 12531391. The next prime is 12531437. The reversal of 12531424 is 42413521.

It is a junction number, because it is equal to n+sod(n) for n = 12531395 and 12531404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7672 + ... + 9160.

It is an arithmetic number, because the mean of its divisors is an integer number (1032570).

Almost surely, 2^12531424 is an apocalyptic number.

It is an amenable number.

12531424 is a deficient number, since it is larger than the sum of its proper divisors (12250256).

12531424 is a wasteful number, since it uses less digits than its factorization.

12531424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762 (or 1754 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 12531424 is about 3539.9751411557. The cubic root of 12531424 is about 232.2737553252.

Adding to 12531424 its reverse (42413521), we get a palindrome (54944945).

The spelling of 12531424 in words is "twelve million, five hundred thirty-one thousand, four hundred twenty-four".