231938216 has 16 divisors (see below), whose sum is σ = 444998400. Its totient is φ = 113271984.

The previous prime is 231938171. The next prime is 231938221. The reversal of 231938216 is 612839132.

231938216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 336776 + ... + 337463.

It is an arithmetic number, because the mean of its divisors is an integer number (27812400).

Almost surely, 2^231938216 is an apocalyptic number.

It is an amenable number.

231938216 is a deficient number, since it is larger than the sum of its proper divisors (213060184).

231938216 is a wasteful number, since it uses less digits than its factorization.

231938216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674288 (or 674284 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 231938216 is about 15229.5179175179. The cubic root of 231938216 is about 614.4088143108.

The spelling of 231938216 in words is "two hundred thirty-one million, nine hundred thirty-eight thousand, two hundred sixteen".