2109388313 has 2 divisors, whose sum is σ = 2109388314. Its totient is φ = 2109388312.

The previous prime is 2109388301. The next prime is 2109388343. The reversal of 2109388313 is 3138839012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1575454864 + 533933449 = 39692^2 + 23107^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109388313 - 2⁴ = 2109388297 is a prime.

It is not a weakly prime, because it can be changed into another prime (2109388343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054694156 + 1054694157.

It is an arithmetic number, because the mean of its divisors is an integer number (1054694157).

Almost surely, 2^2109388313 is an apocalyptic number.

It is an amenable number.

2109388313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109388313 is an equidigital number, since it uses as much as digits as its factorization.

2109388313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2109388313 is about 45928.0776105423. The cubic root of 2109388313 is about 1282.4846580652.

The spelling of 2109388313 in words is "two billion, one hundred nine million, three hundred eighty-eight thousand, three hundred thirteen".