871700243 has 2 divisors, whose sum is σ = 871700244. Its totient is φ = 871700242.

The previous prime is 871700239. The next prime is 871700251. The reversal of 871700243 is 342007178.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 871700243 - 2² = 871700239 is a prime.

It is a super-2 number, since 2×871700243² = 1519722627292518098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (871700233) 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, 435850121 + 435850122.

It is an arithmetic number, because the mean of its divisors is an integer number (435850122).

Almost surely, 2^871700243 is an apocalyptic number.

871700243 is a deficient number, since it is larger than the sum of its proper divisors (1).

871700243 is an equidigital number, since it uses as much as digits as its factorization.

871700243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 871700243 is about 29524.5701577517. The cubic root of 871700243 is about 955.2617514834.

The spelling of 871700243 in words is "eight hundred seventy-one million, seven hundred thousand, two hundred forty-three".