12731339 has 2 divisors, whose sum is σ = 12731340. Its totient is φ = 12731338.

The previous prime is 12731281. The next prime is 12731357. The reversal of 12731339 is 93313721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12731339 - 2¹² = 12727243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12731399) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365669 + 6365670.

It is an arithmetic number, because the mean of its divisors is an integer number (6365670).

Almost surely, 2^12731339 is an apocalyptic number.

12731339 is a deficient number, since it is larger than the sum of its proper divisors (1).

12731339 is an equidigital number, since it uses as much as digits as its factorization.

12731339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 29.

The square root of 12731339 is about 3568.1001947815. The cubic root of 12731339 is about 233.5024064851.

The spelling of 12731339 in words is "twelve million, seven hundred thirty-one thousand, three hundred thirty-nine".