12724709131 has 2 divisors, whose sum is σ = 12724709132. Its totient is φ = 12724709130.

The previous prime is 12724709087. The next prime is 12724709149. The reversal of 12724709131 is 13190742721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12724709131 is a prime.

It is a super-2 number, since 2×12724709131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12724709191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6362354565 + 6362354566.

It is an arithmetic number, because the mean of its divisors is an integer number (6362354566).

Almost surely, 2^12724709131 is an apocalyptic number.

12724709131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12724709131 is an equidigital number, since it uses as much as digits as its factorization.

12724709131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 12724709131 in words is "twelve billion, seven hundred twenty-four million, seven hundred nine thousand, one hundred thirty-one".