12908131 has 2 divisors, whose sum is σ = 12908132. Its totient is φ = 12908130.

The previous prime is 12908123. The next prime is 12908143. The reversal of 12908131 is 13180921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12908131 - 2³ = 12908123 is a prime.

It is a super-2 number, since 2×12908131² = 333239691826322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12908096 and 12908105.

It is not a weakly prime, because it can be changed into another prime (12908101) 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 as a sum of consecutive naturals, namely, 6454065 + 6454066.

It is an arithmetic number, because the mean of its divisors is an integer number (6454066).

Almost surely, 2^12908131 is an apocalyptic number.

12908131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12908131 is an equidigital number, since it uses as much as digits as its factorization.

12908131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 12908131 is about 3592.7887497041. The cubic root of 12908131 is about 234.5782748712.

The spelling of 12908131 in words is "twelve million, nine hundred eight thousand, one hundred thirty-one".