1312798433 has 2 divisors, whose sum is σ = 1312798434. Its totient is φ = 1312798432.

The previous prime is 1312798391. The next prime is 1312798453. The reversal of 1312798433 is 3348972131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994960849 + 317837584 = 31543^2 + 17828^2 .

It is an emirp because it is prime and its reverse (3348972131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312798433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312798453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656399216 + 656399217.

It is an arithmetic number, because the mean of its divisors is an integer number (656399217).

Almost surely, 2^1312798433 is an apocalyptic number.

It is an amenable number.

1312798433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312798433 is an equidigital number, since it uses as much as digits as its factorization.

1312798433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 1312798433 is about 36232.5603980729. The cubic root of 1312798433 is about 1094.9627623680.

The spelling of 1312798433 in words is "one billion, three hundred twelve million, seven hundred ninety-eight thousand, four hundred thirty-three".