1247131002697 has 2 divisors, whose sum is σ = 1247131002698. Its totient is φ = 1247131002696.

The previous prime is 1247131002643. The next prime is 1247131002703. The reversal of 1247131002697 is 7962001317421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1070357845561 + 176773157136 = 1034581^2 + 420444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1247131002697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1247131002197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623565501348 + 623565501349.

It is an arithmetic number, because the mean of its divisors is an integer number (623565501349).

Almost surely, 2^{1247131002697} is an apocalyptic number.

It is an amenable number.

1247131002697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247131002697 is an equidigital number, since it uses as much as digits as its factorization.

1247131002697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 1247131002697 in words is "one trillion, two hundred forty-seven billion, one hundred thirty-one million, two thousand, six hundred ninety-seven".