2171563313 has 2 divisors, whose sum is σ = 2171563314. Its totient is φ = 2171563312.

The previous prime is 2171563301. The next prime is 2171563343. The reversal of 2171563313 is 3133651712.

2171563313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1983544369 + 188018944 = 44537^2 + 13712^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171563313 - 2⁶ = 2171563249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2171563313.

It is not a weakly prime, because it can be changed into another prime (2171563343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085781656 + 1085781657.

It is an arithmetic number, because the mean of its divisors is an integer number (1085781657).

Almost surely, 2^2171563313 is an apocalyptic number.

It is an amenable number.

2171563313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171563313 is an equidigital number, since it uses as much as digits as its factorization.

2171563313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 32.

The square root of 2171563313 is about 46600.0355471967. The cubic root of 2171563313 is about 1294.9634139423.

The spelling of 2171563313 in words is "two billion, one hundred seventy-one million, five hundred sixty-three thousand, three hundred thirteen".