2102805347 has 2 divisors, whose sum is σ = 2102805348. Its totient is φ = 2102805346.

The previous prime is 2102805317. The next prime is 2102805379. The reversal of 2102805347 is 7435082012.

It is an a-pointer prime, because the next prime (2102805379) can be obtained adding 2102805347 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102805347 - 2¹⁸ = 2102543203 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102805317) 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, 1051402673 + 1051402674.

It is an arithmetic number, because the mean of its divisors is an integer number (1051402674).

Almost surely, 2^2102805347 is an apocalyptic number.

2102805347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102805347 is an equidigital number, since it uses as much as digits as its factorization.

2102805347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2102805347 is about 45856.3555791343. The cubic root of 2102805347 is about 1281.1491444165.

Adding to 2102805347 its reverse (7435082012), we get a palindrome (9537887359).

The spelling of 2102805347 in words is "two billion, one hundred two million, eight hundred five thousand, three hundred forty-seven".