2128319 has 2 divisors, whose sum is σ = 2128320. Its totient is φ = 2128318.

The previous prime is 2128309. The next prime is 2128327. The reversal of 2128319 is 9138212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2128319 - 2⁴ = 2128303 is a prime.

It is a super-2 number, since 2×2128319² = 9059483531522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128309) 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, 1064159 + 1064160.

It is an arithmetic number, because the mean of its divisors is an integer number (1064160).

2^2128319 is an apocalyptic number.

2128319 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128319 is an equidigital number, since it uses as much as digits as its factorization.

2128319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

The square root of 2128319 is about 1458.8759371516. The cubic root of 2128319 is about 128.6309787045.

The spelling of 2128319 in words is "two million, one hundred twenty-eight thousand, three hundred nineteen".