315121869430793 has 2 divisors, whose sum is σ = 315121869430794. Its totient is φ = 315121869430792.

The previous prime is 315121869430783. The next prime is 315121869430859. The reversal of 315121869430793 is 397034968121513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270239011346704 + 44882858084089 = 16438948^2 + 6699467^2 .

It is a cyclic number.

It is not a de Polignac number, because 315121869430793 - 2²⁶ = 315121802321929 is a prime.

It is not a weakly prime, because it can be changed into another prime (315121869430783) 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, 157560934715396 + 157560934715397.

It is an arithmetic number, because the mean of its divisors is an integer number (157560934715397).

It is a 1-persistent number, because it is pandigital, but 2⋅315121869430793 = 630243738861586 is not.

Almost surely, 2^{315121869430793} is an apocalyptic number.

It is an amenable number.

315121869430793 is a deficient number, since it is larger than the sum of its proper divisors (1).

315121869430793 is an equidigital number, since it uses as much as digits as its factorization.

315121869430793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 315121869430793 in words is "three hundred fifteen trillion, one hundred twenty-one billion, eight hundred sixty-nine million, four hundred thirty thousand, seven hundred ninety-three".