231878673 has 32 divisors (see below), whose sum is σ = 376252800. Its totient is φ = 140263488.

The previous prime is 231878659. The next prime is 231878681. The reversal of 231878673 is 376878132.

It is not a de Polignac number, because 231878673 - 2⁶ = 231878609 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231828673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15111 + ... + 26307.

It is an arithmetic number, because the mean of its divisors is an integer number (11757900).

Almost surely, 2^231878673 is an apocalyptic number.

It is an amenable number.

231878673 is a deficient number, since it is larger than the sum of its proper divisors (144374127).

231878673 is a wasteful number, since it uses less digits than its factorization.

231878673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11278 (or 11272 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 231878673 is about 15227.5629369903. The cubic root of 231878673 is about 614.3562329587.

The spelling of 231878673 in words is "two hundred thirty-one million, eight hundred seventy-eight thousand, six hundred seventy-three".