810051313 has 2 divisors, whose sum is σ = 810051314. Its totient is φ = 810051312.

The previous prime is 810051293. The next prime is 810051331. The reversal of 810051313 is 313150018.

Together with next prime (810051331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 518563984 + 291487329 = 22772^2 + 17073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-810051313 is a prime.

It is not a weakly prime, because it can be changed into another prime (810051383) 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, 405025656 + 405025657.

It is an arithmetic number, because the mean of its divisors is an integer number (405025657).

Almost surely, 2^810051313 is an apocalyptic number.

It is an amenable number.

810051313 is a deficient number, since it is larger than the sum of its proper divisors (1).

810051313 is an equidigital number, since it uses as much as digits as its factorization.

810051313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 810051313 is about 28461.4004047587. The cubic root of 810051313 is about 932.1894354966.

The spelling of 810051313 in words is "eight hundred ten million, fifty-one thousand, three hundred thirteen".