999000313 has 2 divisors, whose sum is σ = 999000314. Its totient is φ = 999000312.

The previous prime is 999000311. The next prime is 999000319. The reversal of 999000313 is 313000999.

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., 499611904 + 499388409 = 22352^2 + 22347^2 .

It is a cyclic number.

It is not a de Polignac number, because 999000313 - 2¹ = 999000311 is a prime.

Together with 999000311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (999000311) 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, 499500156 + 499500157.

It is an arithmetic number, because the mean of its divisors is an integer number (499500157).

Almost surely, 2^999000313 is an apocalyptic number.

It is an amenable number.

999000313 is a deficient number, since it is larger than the sum of its proper divisors (1).

999000313 is an equidigital number, since it uses as much as digits as its factorization.

999000313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 999000313 is about 31606.9662099987. The cubic root of 999000313 is about 999.6666598967. Note that the first 4 decimals are identical.

The spelling of 999000313 in words is "nine hundred ninety-nine million, three hundred thirteen", and thus it is an aban number.