872231 has 2 divisors, whose sum is σ = 872232. Its totient is φ = 872230.

The previous prime is 872227. The next prime is 872237. The reversal of 872231 is 132278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 872231 - 2² = 872227 is a prime.

It is a super-2 number, since 2×872231² = 1521573834722, which contains 22 as substring.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 872197 and 872206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436115 + 436116.

It is an arithmetic number, because the mean of its divisors is an integer number (436116).

2⁸⁷²²³¹ is an apocalyptic number.

872231 is a deficient number, since it is larger than the sum of its proper divisors (1).

872231 is an equidigital number, since it uses as much as digits as its factorization.

872231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 872231 is about 933.9330811145. The cubic root of 872231 is about 95.5455590668.

The spelling of 872231 in words is "eight hundred seventy-two thousand, two hundred thirty-one".