316380381869 has 2 divisors, whose sum is σ = 316380381870. Its totient is φ = 316380381868.

The previous prime is 316380381797. The next prime is 316380381887. The reversal of 316380381869 is 968183083613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237763512100 + 78616869769 = 487610^2 + 280387^2 .

It is an emirp because it is prime and its reverse (968183083613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316380381869 - 2²⁸ = 316111946413 is a prime.

It is a super-2 number, since 2×316380381869² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316380384869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158190190934 + 158190190935.

It is an arithmetic number, because the mean of its divisors is an integer number (158190190935).

Almost surely, 2^316380381869 is an apocalyptic number.

It is an amenable number.

316380381869 is a deficient number, since it is larger than the sum of its proper divisors (1).

316380381869 is an equidigital number, since it uses as much as digits as its factorization.

316380381869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 316380381869 in words is "three hundred sixteen billion, three hundred eighty million, three hundred eighty-one thousand, eight hundred sixty-nine".