2111310217 has 2 divisors, whose sum is σ = 2111310218. Its totient is φ = 2111310216.

The previous prime is 2111310203. The next prime is 2111310251. The reversal of 2111310217 is 7120131112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1816123456 + 295186761 = 42616^2 + 17181^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111310217 - 2²³ = 2102921609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111310194 and 2111310203.

It is not a weakly prime, because it can be changed into another prime (2111310517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055655108 + 1055655109.

It is an arithmetic number, because the mean of its divisors is an integer number (1055655109).

Almost surely, 2^2111310217 is an apocalyptic number.

It is an amenable number.

2111310217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111310217 is an equidigital number, since it uses as much as digits as its factorization.

2111310217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 2111310217 is about 45948.9958214540. The cubic root of 2111310217 is about 1282.8740385914.

Adding to 2111310217 its reverse (7120131112), we get a palindrome (9231441329).

The spelling of 2111310217 in words is "two billion, one hundred eleven million, three hundred ten thousand, two hundred seventeen".