2305316621 has 2 divisors, whose sum is σ = 2305316622. Its totient is φ = 2305316620.

The previous prime is 2305316609. The next prime is 2305316623. The reversal of 2305316621 is 1266135032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2248087396 + 57229225 = 47414^2 + 7565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2305316621 is a prime.

Together with 2305316623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2305316623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152658310 + 1152658311.

It is an arithmetic number, because the mean of its divisors is an integer number (1152658311).

Almost surely, 2^2305316621 is an apocalyptic number.

It is an amenable number.

2305316621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305316621 is an equidigital number, since it uses as much as digits as its factorization.

2305316621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2305316621 is about 48013.7128433118. The cubic root of 2305316621 is about 1321.0224365321.

The spelling of 2305316621 in words is "two billion, three hundred five million, three hundred sixteen thousand, six hundred twenty-one".