12910931 has 8 divisors (see below), whose sum is σ = 14225328. Its totient is φ = 11620000.

The previous prime is 12910927. The next prime is 12910943. The reversal of 12910931 is 13901921.

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

It is a cyclic number.

It is not a de Polignac number, because 12910931 - 2² = 12910927 is a prime.

It is a super-2 number, since 2×12910931² = 333384278573522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12910931.

It is not an unprimeable number, because it can be changed into a prime (12910951) 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, 4700 + ... + 6921.

It is an arithmetic number, because the mean of its divisors is an integer number (1778166).

Almost surely, 2^12910931 is an apocalyptic number.

12910931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12910931 is a deficient number, since it is larger than the sum of its proper divisors (1314397).

12910931 is a wasteful number, since it uses less digits than its factorization.

12910931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11733.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 12910931 is about 3593.1783980203. The cubic root of 12910931 is about 234.5952350256.

The spelling of 12910931 in words is "twelve million, nine hundred ten thousand, nine hundred thirty-one".