878213831 has 8 divisors (see below), whose sum is σ = 958771728. Its totient is φ = 797776000.

The previous prime is 878213813. The next prime is 878213851. The reversal of 878213831 is 138312878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 878213831 - 2¹⁴ = 878197447 is a prime.

It is a super-2 number, since 2×878213831² = 1542519065919393122, 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 (878213851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14360 + ... + 44301.

It is an arithmetic number, because the mean of its divisors is an integer number (119846466).

Almost surely, 2^878213831 is an apocalyptic number.

878213831 is a deficient number, since it is larger than the sum of its proper divisors (80557897).

878213831 is a wasteful number, since it uses less digits than its factorization.

878213831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60033.

The product of its digits is 64512, while the sum is 41.

The square root of 878213831 is about 29634.6727837511. The cubic root of 878213831 is about 957.6351772830.

The spelling of 878213831 in words is "eight hundred seventy-eight million, two hundred thirteen thousand, eight hundred thirty-one".