514318681 has 2 divisors, whose sum is σ = 514318682. Its totient is φ = 514318680.

The previous prime is 514318643. The next prime is 514318691. The reversal of 514318681 is 186813415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403648281 + 110670400 = 20091^2 + 10520^2 .

It is a cyclic number.

It is not a de Polignac number, because 514318681 - 2⁹ = 514318169 is a prime.

It is a super-2 number, since 2×514318681² = 529047411251159522, which contains 22 as substring.

It is equal to p_27069256 and since 514318681 and 27069256 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 514318681.

It is not a weakly prime, because it can be changed into another prime (514318691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257159340 + 257159341.

It is an arithmetic number, because the mean of its divisors is an integer number (257159341).

Almost surely, 2^514318681 is an apocalyptic number.

It is an amenable number.

514318681 is a deficient number, since it is larger than the sum of its proper divisors (1).

514318681 is an equidigital number, since it uses as much as digits as its factorization.

514318681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 37.

The square root of 514318681 is about 22678.5952166354. The cubic root of 514318681 is about 801.2058279148.

The spelling of 514318681 in words is "five hundred fourteen million, three hundred eighteen thousand, six hundred eighty-one".