6831800321 has 2 divisors, whose sum is σ = 6831800322. Its totient is φ = 6831800320.

The previous prime is 6831800317. The next prime is 6831800363. The reversal of 6831800321 is 1230081386.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6152676721 + 679123600 = 78439^2 + 26060^2 .

It is a cyclic number.

It is not a de Polignac number, because 6831800321 - 2² = 6831800317 is a prime.

It is not a weakly prime, because it can be changed into another prime (6831800021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3415900160 + 3415900161.

It is an arithmetic number, because the mean of its divisors is an integer number (3415900161).

Almost surely, 2^6831800321 is an apocalyptic number.

It is an amenable number.

6831800321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6831800321 is an equidigital number, since it uses as much as digits as its factorization.

6831800321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 6831800321 is about 82654.7053772500. The cubic root of 6831800321 is about 1897.4851604545.

The spelling of 6831800321 in words is "six billion, eight hundred thirty-one million, eight hundred thousand, three hundred twenty-one".