2172057313 has 2 divisors, whose sum is σ = 2172057314. Its totient is φ = 2172057312.

The previous prime is 2172057161. The next prime is 2172057353. The reversal of 2172057313 is 3137502712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1722914064 + 449143249 = 41508^2 + 21193^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172057313 - 2²¹ = 2169960161 is a prime.

It is not a weakly prime, because it can be changed into another prime (2172057353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086028656 + 1086028657.

It is an arithmetic number, because the mean of its divisors is an integer number (1086028657).

Almost surely, 2^2172057313 is an apocalyptic number.

It is an amenable number.

2172057313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172057313 is an equidigital number, since it uses as much as digits as its factorization.

2172057313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 2172057313 is about 46605.3356709294. The cubic root of 2172057313 is about 1295.0616017962.

The spelling of 2172057313 in words is "two billion, one hundred seventy-two million, fifty-seven thousand, three hundred thirteen".