2129317271 has 2 divisors, whose sum is σ = 2129317272. Its totient is φ = 2129317270.

The previous prime is 2129317219. The next prime is 2129317273. The reversal of 2129317271 is 1727139212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2129317271 is a prime.

Together with 2129317273, 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 (2129317273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064658635 + 1064658636.

It is an arithmetic number, because the mean of its divisors is an integer number (1064658636).

Almost surely, 2^2129317271 is an apocalyptic number.

2129317271 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129317271 is an equidigital number, since it uses as much as digits as its factorization.

2129317271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 35.

The square root of 2129317271 is about 46144.5259050302. The cubic root of 2129317271 is about 1286.5108667146.

The spelling of 2129317271 in words is "two billion, one hundred twenty-nine million, three hundred seventeen thousand, two hundred seventy-one".