231878671 has 4 divisors (see below), whose sum is σ = 232704144. Its totient is φ = 231053200.

The previous prime is 231878659. The next prime is 231878681. The reversal of 231878671 is 176878132.

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 231878671 - 2⁹ = 231878159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231878611) 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, 412315 + ... + 412876.

It is an arithmetic number, because the mean of its divisors is an integer number (58176036).

Almost surely, 2^231878671 is an apocalyptic number.

231878671 is a deficient number, since it is larger than the sum of its proper divisors (825473).

231878671 is an equidigital number, since it uses as much as digits as its factorization.

231878671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825472.

The product of its digits is 112896, while the sum is 43.

The square root of 231878671 is about 15227.5628713199. The cubic root of 231878671 is about 614.3562311924.

The spelling of 231878671 in words is "two hundred thirty-one million, eight hundred seventy-eight thousand, six hundred seventy-one".