2105996317 has 2 divisors, whose sum is σ = 2105996318. Its totient is φ = 2105996316.

The previous prime is 2105996293. The next prime is 2105996323. The reversal of 2105996317 is 7136995012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1589297956 + 516698361 = 39866^2 + 22731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105996317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105996017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052998158 + 1052998159.

It is an arithmetic number, because the mean of its divisors is an integer number (1052998159).

Almost surely, 2^2105996317 is an apocalyptic number.

It is an amenable number.

2105996317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105996317 is an equidigital number, since it uses as much as digits as its factorization.

2105996317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 2105996317 is about 45891.1354947772. The cubic root of 2105996317 is about 1281.7968573009.

The spelling of 2105996317 in words is "two billion, one hundred five million, nine hundred ninety-six thousand, three hundred seventeen".