12806931 has 8 divisors (see below), whose sum is σ = 17974720. Its totient is φ = 8088552.

The previous prime is 12806923. The next prime is 12806939. The reversal of 12806931 is 13960821.

12806931 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 (12806923) and next prime (12806939).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12806931 - 2³ = 12806923 is a prime.

It is a super-2 number, since 2×12806931² = 328034963277522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12806939) 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, 112285 + ... + 112398.

It is an arithmetic number, because the mean of its divisors is an integer number (2246840).

Almost surely, 2^12806931 is an apocalyptic number.

12806931 is a deficient number, since it is larger than the sum of its proper divisors (5167789).

12806931 is a wasteful number, since it uses less digits than its factorization.

12806931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224705.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 12806931 is about 3578.6772696067. The cubic root of 12806931 is about 233.9636330363.

The spelling of 12806931 in words is "twelve million, eight hundred six thousand, nine hundred thirty-one".