313841681 has 2 divisors, whose sum is σ = 313841682. Its totient is φ = 313841680.

The previous prime is 313841669. The next prime is 313841687. The reversal of 313841681 is 186148313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242861056 + 70980625 = 15584^2 + 8425^2 .

It is a cyclic number.

It is not a de Polignac number, because 313841681 - 2⁶ = 313841617 is a prime.

It is a super-2 number, since 2×313841681² = 196993201465811522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313841687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156920840 + 156920841.

It is an arithmetic number, because the mean of its divisors is an integer number (156920841).

Almost surely, 2^313841681 is an apocalyptic number.

It is an amenable number.

313841681 is a deficient number, since it is larger than the sum of its proper divisors (1).

313841681 is an equidigital number, since it uses as much as digits as its factorization.

313841681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 313841681 is about 17715.5773544076. The cubic root of 313841681 is about 679.5741862672.

Adding to 313841681 its reverse (186148313), we get a palindrome (499989994).

The spelling of 313841681 in words is "three hundred thirteen million, eight hundred forty-one thousand, six hundred eighty-one".