999311113 has 2 divisors, whose sum is σ = 999311114. Its totient is φ = 999311112.

The previous prime is 999311111. The next prime is 999311129. The reversal of 999311113 is 311113999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 981443584 + 17867529 = 31328^2 + 4227^2 .

It is a cyclic number.

It is not a de Polignac number, because 999311113 - 2¹ = 999311111 is a prime.

Together with 999311111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (999311111) 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, 499655556 + 499655557.

It is an arithmetic number, because the mean of its divisors is an integer number (499655557).

Almost surely, 2^999311113 is an apocalyptic number.

It is an amenable number.

999311113 is a deficient number, since it is larger than the sum of its proper divisors (1).

999311113 is an equidigital number, since it uses as much as digits as its factorization.

999311113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6561, while the sum is 37.

The square root of 999311113 is about 31611.8824653009. The cubic root of 999311113 is about 999.7703182503.

The spelling of 999311113 in words is "nine hundred ninety-nine million, three hundred eleven thousand, one hundred thirteen".