12731611 has 2 divisors, whose sum is σ = 12731612. Its totient is φ = 12731610.

The previous prime is 12731599. The next prime is 12731629. The reversal of 12731611 is 11613721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12731611 - 2⁹ = 12731099 is a prime.

It is not a weakly prime, because it can be changed into another prime (12731681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365805 + 6365806.

It is an arithmetic number, because the mean of its divisors is an integer number (6365806).

Almost surely, 2^12731611 is an apocalyptic number.

12731611 is a deficient number, since it is larger than the sum of its proper divisors (1).

12731611 is an equidigital number, since it uses as much as digits as its factorization.

12731611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 22.

The square root of 12731611 is about 3568.1383100995. The cubic root of 12731611 is about 233.5040693686.

The spelling of 12731611 in words is "twelve million, seven hundred thirty-one thousand, six hundred eleven".