1312431421733 has 2 divisors, whose sum is σ = 1312431421734. Its totient is φ = 1312431421732.

The previous prime is 1312431421649. The next prime is 1312431421799. The reversal of 1312431421733 is 3371241342131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1297225325764 + 15206095969 = 1138958^2 + 123313^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312431421733 - 2¹⁴ = 1312431405349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312431421693 and 1312431421702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312431421033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656215710866 + 656215710867.

It is an arithmetic number, because the mean of its divisors is an integer number (656215710867).

Almost surely, 2^{1312431421733} is an apocalyptic number.

It is an amenable number.

1312431421733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312431421733 is an equidigital number, since it uses as much as digits as its factorization.

1312431421733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

Adding to 1312431421733 its reverse (3371241342131), we get a palindrome (4683672763864).

The spelling of 1312431421733 in words is "one trillion, three hundred twelve billion, four hundred thirty-one million, four hundred twenty-one thousand, seven hundred thirty-three".