872143023 has 4 divisors (see below), whose sum is σ = 1162857368. Its totient is φ = 581428680.

The previous prime is 872142991. The next prime is 872143031. The reversal of 872143023 is 320341278.

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

It is not a de Polignac number, because 872143023 - 2⁵ = 872142991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872143033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145357168 + ... + 145357173.

It is an arithmetic number, because the mean of its divisors is an integer number (290714342).

Almost surely, 2^872143023 is an apocalyptic number.

872143023 is a deficient number, since it is larger than the sum of its proper divisors (290714345).

872143023 is a wasteful number, since it uses less digits than its factorization.

872143023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290714344.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 872143023 is about 29532.0677061394. The cubic root of 872143023 is about 955.4234657905.

The spelling of 872143023 in words is "eight hundred seventy-two million, one hundred forty-three thousand, twenty-three".