231228208 has 10 divisors (see below), whose sum is σ = 448004684. Its totient is φ = 115614096.

The previous prime is 231228199. The next prime is 231228209. The reversal of 231228208 is 802822132.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231228209) 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 as a sum of consecutive naturals, namely, 7225866 + ... + 7225897.

Almost surely, 2^231228208 is an apocalyptic number.

It is an amenable number.

231228208 is a deficient number, since it is larger than the sum of its proper divisors (216776476).

231228208 is a wasteful number, since it uses less digits than its factorization.

231228208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14451771 (or 14451765 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 231228208 is about 15206.1897923181. The cubic root of 231228208 is about 613.7812318550.

The spelling of 231228208 in words is "two hundred thirty-one million, two hundred twenty-eight thousand, two hundred eight".