2305461721 has 2 divisors, whose sum is σ = 2305461722. Its totient is φ = 2305461720.

The previous prime is 2305461707. The next prime is 2305461733. The reversal of 2305461721 is 1271645032.

2305461721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2205241600 + 100220121 = 46960^2 + 10011^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305461721 - 2⁵ = 2305461689 is a prime.

It is not a weakly prime, because it can be changed into another prime (2305461751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152730860 + 1152730861.

It is an arithmetic number, because the mean of its divisors is an integer number (1152730861).

Almost surely, 2^2305461721 is an apocalyptic number.

It is an amenable number.

2305461721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305461721 is an equidigital number, since it uses as much as digits as its factorization.

2305461721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2305461721 is about 48015.2238461928. The cubic root of 2305461721 is about 1321.0501516454.

The spelling of 2305461721 in words is "two billion, three hundred five million, four hundred sixty-one thousand, seven hundred twenty-one".