2172743071 has 2 divisors, whose sum is σ = 2172743072. Its totient is φ = 2172743070.

The previous prime is 2172743063. The next prime is 2172743117. The reversal of 2172743071 is 1703472712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2172743071 - 2³ = 2172743063 is a prime.

It is a super-2 number, since 2×2172743071² = 9441624905157022082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172743011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086371535 + 1086371536.

It is an arithmetic number, because the mean of its divisors is an integer number (1086371536).

Almost surely, 2^2172743071 is an apocalyptic number.

2172743071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172743071 is an equidigital number, since it uses as much as digits as its factorization.

2172743071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 2172743071 is about 46612.6921664046. The cubic root of 2172743071 is about 1295.1978789565.

The spelling of 2172743071 in words is "two billion, one hundred seventy-two million, seven hundred forty-three thousand, seventy-one".