878231 has 4 divisors (see below), whose sum is σ = 880992. Its totient is φ = 875472.

The previous prime is 878221. The next prime is 878239. The reversal of 878231 is 132878.

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 878231 - 2⁶ = 878167 is a prime.

It is a super-2 number, since 2×878231² = 1542579378722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 878194 and 878203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878239) 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, 830 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (220248).

2⁸⁷⁸²³¹ is an apocalyptic number.

878231 is a deficient number, since it is larger than the sum of its proper divisors (2761).

878231 is a wasteful number, since it uses less digits than its factorization.

878231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760.

The product of its digits is 2688, while the sum is 29.

The square root of 878231 is about 937.1397974689. The cubic root of 878231 is about 95.7641417802.

The spelling of 878231 in words is "eight hundred seventy-eight thousand, two hundred thirty-one".