314643847681 has 2 divisors, whose sum is σ = 314643847682. Its totient is φ = 314643847680.

The previous prime is 314643847613. The next prime is 314643847691. The reversal of 314643847681 is 186748346413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311704473025 + 2939374656 = 558305^2 + 54216^2 .

It is a cyclic number.

It is not a de Polignac number, because 314643847681 - 2¹⁵ = 314643814913 is a prime.

It is a super-2 number, since 2×314643847681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (314643847691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157321923840 + 157321923841.

It is an arithmetic number, because the mean of its divisors is an integer number (157321923841).

Almost surely, 2^314643847681 is an apocalyptic number.

It is an amenable number.

314643847681 is a deficient number, since it is larger than the sum of its proper divisors (1).

314643847681 is an equidigital number, since it uses as much as digits as its factorization.

314643847681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 55.

The spelling of 314643847681 in words is "three hundred fourteen billion, six hundred forty-three million, eight hundred forty-seven thousand, six hundred eighty-one".