1247131003819 has 2 divisors, whose sum is σ = 1247131003820. Its totient is φ = 1247131003818.

The previous prime is 1247131003799. The next prime is 1247131003841. The reversal of 1247131003819 is 9183001317421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1247131003819 is a prime.

It is a super-2 number, since 2×1247131003819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1247131003519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623565501909 + 623565501910.

It is an arithmetic number, because the mean of its divisors is an integer number (623565501910).

Almost surely, 2^{1247131003819} is an apocalyptic number.

1247131003819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247131003819 is an equidigital number, since it uses as much as digits as its factorization.

1247131003819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 1247131003819 in words is "one trillion, two hundred forty-seven billion, one hundred thirty-one million, three thousand, eight hundred nineteen".