316380218729 has 2 divisors, whose sum is σ = 316380218730. Its totient is φ = 316380218728.

The previous prime is 316380218723. The next prime is 316380218783. The reversal of 316380218729 is 927812083613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177284786704 + 139095432025 = 421052^2 + 372955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316380218729 is a prime.

It is a super-3 number, since 3×316380218729³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (316380218723) 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, 158190109364 + 158190109365.

It is an arithmetic number, because the mean of its divisors is an integer number (158190109365).

Almost surely, 2^316380218729 is an apocalyptic number.

It is an amenable number.

316380218729 is a deficient number, since it is larger than the sum of its proper divisors (1).

316380218729 is an equidigital number, since it uses as much as digits as its factorization.

316380218729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 316380218729 in words is "three hundred sixteen billion, three hundred eighty million, two hundred eighteen thousand, seven hundred twenty-nine".