2305671881 has 2 divisors, whose sum is σ = 2305671882. Its totient is φ = 2305671880.

The previous prime is 2305671847. The next prime is 2305671887. The reversal of 2305671881 is 1881765032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1759047481 + 546624400 = 41941^2 + 23380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305671881 - 2¹⁴ = 2305655497 is a prime.

It is a super-2 number, since 2×2305671881² = 10632245645668156322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2305671887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152835940 + 1152835941.

It is an arithmetic number, because the mean of its divisors is an integer number (1152835941).

Almost surely, 2^2305671881 is an apocalyptic number.

It is an amenable number.

2305671881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305671881 is an equidigital number, since it uses as much as digits as its factorization.

2305671881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 2305671881 is about 48017.4122688843. The cubic root of 2305671881 is about 1321.0902916112.

The spelling of 2305671881 in words is "two billion, three hundred five million, six hundred seventy-one thousand, eight hundred eighty-one".