2211312317 has 2 divisors, whose sum is σ = 2211312318. Its totient is φ = 2211312316.

The previous prime is 2211312251. The next prime is 2211312331. The reversal of 2211312317 is 7132131122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1455117316 + 756195001 = 38146^2 + 27499^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211312317 - 2²² = 2207118013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211312292 and 2211312301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211312347) 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, 1105656158 + 1105656159.

It is an arithmetic number, because the mean of its divisors is an integer number (1105656159).

Almost surely, 2^2211312317 is an apocalyptic number.

It is an amenable number.

2211312317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211312317 is an equidigital number, since it uses as much as digits as its factorization.

2211312317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 2211312317 is about 47024.5926829781. The cubic root of 2211312317 is about 1302.8168342965.

Adding to 2211312317 its reverse (7132131122), we get a palindrome (9343443439).

The spelling of 2211312317 in words is "two billion, two hundred eleven million, three hundred twelve thousand, three hundred seventeen".