2291173243 has 2 divisors, whose sum is σ = 2291173244. Its totient is φ = 2291173242.

The previous prime is 2291173229. The next prime is 2291173253. The reversal of 2291173243 is 3423711922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2291173243 - 2²⁹ = 1754302331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2291173199 and 2291173208.

It is not a weakly prime, because it can be changed into another prime (2291173253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145586621 + 1145586622.

It is an arithmetic number, because the mean of its divisors is an integer number (1145586622).

Almost surely, 2^2291173243 is an apocalyptic number.

2291173243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291173243 is an equidigital number, since it uses as much as digits as its factorization.

2291173243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 2291173243 is about 47866.2014682594. The cubic root of 2291173243 is about 1318.3153522249.

The spelling of 2291173243 in words is "two billion, two hundred ninety-one million, one hundred seventy-three thousand, two hundred forty-three".