12731699 has 2 divisors, whose sum is σ = 12731700. Its totient is φ = 12731698.

The previous prime is 12731683. The next prime is 12731701. The reversal of 12731699 is 99613721.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12731699 - 2⁴ = 12731683 is a prime.

Together with 12731701, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12731629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365849 + 6365850.

It is an arithmetic number, because the mean of its divisors is an integer number (6365850).

Almost surely, 2^12731699 is an apocalyptic number.

12731699 is a deficient number, since it is larger than the sum of its proper divisors (1).

12731699 is an equidigital number, since it uses as much as digits as its factorization.

12731699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 12731699 is about 3568.1506414388. The cubic root of 12731699 is about 233.5046073553.

The spelling of 12731699 in words is "twelve million, seven hundred thirty-one thousand, six hundred ninety-nine".