231698216 has 32 divisors (see below), whose sum is σ = 459406080. Its totient is φ = 109372800.

The previous prime is 231698209. The next prime is 231698221. The reversal of 231698216 is 612896132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231698216.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1226 + ... + 21561.

It is an arithmetic number, because the mean of its divisors is an integer number (14356440).

Almost surely, 2^231698216 is an apocalyptic number.

It is an amenable number.

231698216 is a deficient number, since it is larger than the sum of its proper divisors (227707864).

231698216 is a wasteful number, since it uses less digits than its factorization.

231698216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22865 (or 22861 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 231698216 is about 15221.6364429059. The cubic root of 231698216 is about 614.1968196277.

The spelling of 231698216 in words is "two hundred thirty-one million, six hundred ninety-eight thousand, two hundred sixteen".