1312043442431 has 2 divisors, whose sum is σ = 1312043442432. Its totient is φ = 1312043442430.

The previous prime is 1312043442419. The next prime is 1312043442467. The reversal of 1312043442431 is 1342443402131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312043442431 is a prime.

It is a super-2 number, since 2×1312043442431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312043442481) 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, 656021721215 + 656021721216.

It is an arithmetic number, because the mean of its divisors is an integer number (656021721216).

Almost surely, 2^{1312043442431} is an apocalyptic number.

1312043442431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312043442431 is an equidigital number, since it uses as much as digits as its factorization.

1312043442431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 1312043442431 its reverse (1342443402131), we get a palindrome (2654486844562).

The spelling of 1312043442431 in words is "one trillion, three hundred twelve billion, forty-three million, four hundred forty-two thousand, four hundred thirty-one".