12931008 has 28 divisors (see below), whose sum is σ = 34213800. Its totient is φ = 4310272.

The previous prime is 12931007. The next prime is 12931043. The reversal of 12931008 is 80013921.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12931007) 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, 33483 + ... + 33866.

Almost surely, 2^12931008 is an apocalyptic number.

It is an amenable number.

12931008 is an abundant number, since it is smaller than the sum of its proper divisors (21282792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12931008 is an equidigital number, since it uses as much as digits as its factorization.

12931008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67364 (or 67354 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 12931008 is about 3595.9710788603. The cubic root of 12931008 is about 234.7167736207.

Adding to 12931008 its reverse (80013921), we get a palindrome (92944929).

The spelling of 12931008 in words is "twelve million, nine hundred thirty-one thousand, eight".