12971241331 has 2 divisors, whose sum is σ = 12971241332. Its totient is φ = 12971241330.

The previous prime is 12971241329. The next prime is 12971241379. The reversal of 12971241331 is 13314217921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12971241331 - 2¹ = 12971241329 is a prime.

It is a super-2 number, since 2×12971241331² (a number of 21 digits) contains 22 as substring.

Together with 12971241329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12971241931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6485620665 + 6485620666.

It is an arithmetic number, because the mean of its divisors is an integer number (6485620666).

Almost surely, 2^12971241331 is an apocalyptic number.

12971241331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12971241331 is an equidigital number, since it uses as much as digits as its factorization.

12971241331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The spelling of 12971241331 in words is "twelve billion, nine hundred seventy-one million, two hundred forty-one thousand, three hundred thirty-one".