2106305317 has 2 divisors, whose sum is σ = 2106305318. Its totient is φ = 2106305316.

The previous prime is 2106305303. The next prime is 2106305353. The reversal of 2106305317 is 7135036012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1085438916 + 1020866401 = 32946^2 + 31951^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106305317 - 2²⁷ = 1972087589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106305387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053152658 + 1053152659.

It is an arithmetic number, because the mean of its divisors is an integer number (1053152659).

Almost surely, 2^2106305317 is an apocalyptic number.

It is an amenable number.

2106305317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106305317 is an equidigital number, since it uses as much as digits as its factorization.

2106305317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2106305317 is about 45894.5020345575. The cubic root of 2106305317 is about 1281.8595443145.

The spelling of 2106305317 in words is "two billion, one hundred six million, three hundred five thousand, three hundred seventeen".