12131243699 has 2 divisors, whose sum is σ = 12131243700. Its totient is φ = 12131243698.

The previous prime is 12131243689. The next prime is 12131243711. The reversal of 12131243699 is 99634213121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12131243699 is a prime.

It is not a weakly prime, because it can be changed into another prime (12131243689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065621849 + 6065621850.

It is an arithmetic number, because the mean of its divisors is an integer number (6065621850).

Almost surely, 2^12131243699 is an apocalyptic number.

12131243699 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131243699 is an equidigital number, since it uses as much as digits as its factorization.

12131243699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The spelling of 12131243699 in words is "twelve billion, one hundred thirty-one million, two hundred forty-three thousand, six hundred ninety-nine".