878623231 has 4 divisors (see below), whose sum is σ = 883702152. Its totient is φ = 873544312.

The previous prime is 878623183. The next prime is 878623243. The reversal of 878623231 is 132326878.

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 878623231 - 2¹⁵ = 878590463 is a prime.

It is a super-2 number, since 2×878623231² = 1543957564105758722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878623261) 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, 2539201 + ... + 2539546.

It is an arithmetic number, because the mean of its divisors is an integer number (220925538).

Almost surely, 2^878623231 is an apocalyptic number.

878623231 is a deficient number, since it is larger than the sum of its proper divisors (5078921).

878623231 is a wasteful number, since it uses less digits than its factorization.

878623231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078920.

The product of its digits is 96768, while the sum is 40.

The square root of 878623231 is about 29641.5794282289. The cubic root of 878623231 is about 957.7839622074.

The spelling of 878623231 in words is "eight hundred seventy-eight million, six hundred twenty-three thousand, two hundred thirty-one".