316616487281 has 2 divisors, whose sum is σ = 316616487282. Its totient is φ = 316616487280.

The previous prime is 316616487223. The next prime is 316616487287. The reversal of 316616487281 is 182784616613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253356189025 + 63260298256 = 503345^2 + 251516^2 .

It is an emirp because it is prime and its reverse (182784616613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316616487281 - 2¹⁴ = 316616470897 is a prime.

It is a super-2 number, since 2×316616487281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (316616487287) 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, 158308243640 + 158308243641.

It is an arithmetic number, because the mean of its divisors is an integer number (158308243641).

Almost surely, 2^316616487281 is an apocalyptic number.

It is an amenable number.

316616487281 is a deficient number, since it is larger than the sum of its proper divisors (1).

316616487281 is an equidigital number, since it uses as much as digits as its factorization.

316616487281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 53.

The spelling of 316616487281 in words is "three hundred sixteen billion, six hundred sixteen million, four hundred eighty-seven thousand, two hundred eighty-one".