12831916 has 24 divisors (see below), whose sum is σ = 23870000. Its totient is φ = 6018624.

The previous prime is 12831913. The next prime is 12831919. The reversal of 12831916 is 61913821.

12831916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12831913) and next prime (12831919).

It is not an unprimeable number, because it can be changed into a prime (12831911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7510 + ... + 9058.

Almost surely, 2^12831916 is an apocalyptic number.

It is an amenable number.

12831916 is a deficient number, since it is larger than the sum of its proper divisors (11038084).

12831916 is a wasteful number, since it uses less digits than its factorization.

12831916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681 (or 1679 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 12831916 is about 3582.1663836288. The cubic root of 12831916 is about 234.1156804996.

The spelling of 12831916 in words is "twelve million, eight hundred thirty-one thousand, nine hundred sixteen".