12431816 has 32 divisors (see below), whose sum is σ = 24235200. Its totient is φ = 5974080.

The previous prime is 12431813. The next prime is 12431821. The reversal of 12431816 is 61813421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24170 + ... + 24678.

It is an arithmetic number, because the mean of its divisors is an integer number (757350).

Almost surely, 2^12431816 is an apocalyptic number.

12431816 is the 2036-th octagonal number.

It is an amenable number.

12431816 is a deficient number, since it is larger than the sum of its proper divisors (11803384).

12431816 is a wasteful number, since it uses less digits than its factorization.

12431816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 625 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 12431816 is about 3525.8780466715. The cubic root of 12431816 is about 231.6566959692.

The spelling of 12431816 in words is "twelve million, four hundred thirty-one thousand, eight hundred sixteen".