871801223 has 4 divisors (see below), whose sum is σ = 909705648. Its totient is φ = 833896800.

The previous prime is 871801213. The next prime is 871801237. The reversal of 871801223 is 322108178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 871801223 - 2⁶ = 871801159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 871801223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871801213) 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 in 3 ways as a sum of consecutive naturals, for example, 18952178 + ... + 18952223.

It is an arithmetic number, because the mean of its divisors is an integer number (227426412).

Almost surely, 2^871801223 is an apocalyptic number.

871801223 is a deficient number, since it is larger than the sum of its proper divisors (37904425).

871801223 is a wasteful number, since it uses less digits than its factorization.

871801223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37904424.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 871801223 is about 29526.2802093322. The cubic root of 871801223 is about 955.2986367192.

The spelling of 871801223 in words is "eight hundred seventy-one million, eight hundred one thousand, two hundred twenty-three".