872031 has 4 divisors (see below), whose sum is σ = 1162712. Its totient is φ = 581352.

The previous prime is 872023. The next prime is 872033. The reversal of 872031 is 130278.

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

It is not a de Polignac number, because 872031 - 2³ = 872023 is a prime.

It is a super-2 number, since 2×872031² = 1520876129922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 871989 and 872007.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872031.

It is not an unprimeable number, because it can be changed into a prime (872033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145336 + ... + 145341.

It is an arithmetic number, because the mean of its divisors is an integer number (290678).

2⁸⁷²⁰³¹ is an apocalyptic number.

872031 is a deficient number, since it is larger than the sum of its proper divisors (290681).

872031 is a wasteful number, since it uses less digits than its factorization.

872031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290680.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 872031 is about 933.8260009231. The cubic root of 872031 is about 95.5382557368.

The spelling of 872031 in words is "eight hundred seventy-two thousand, thirty-one".