231130216 has 16 divisors (see below), whose sum is σ = 433792800. Its totient is φ = 115452144.

The previous prime is 231130177. The next prime is 231130217. The reversal of 231130216 is 612031132.

231130216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231130193 and 231130202.

It is not an unprimeable number, because it can be changed into a prime (231130217) 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, 5086 + ... + 22093.

It is an arithmetic number, because the mean of its divisors is an integer number (27112050).

Almost surely, 2^231130216 is an apocalyptic number.

It is an amenable number.

231130216 is a deficient number, since it is larger than the sum of its proper divisors (202662584).

231130216 is a wasteful number, since it uses less digits than its factorization.

231130216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28248 (or 28244 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 231130216 is about 15202.9673419369. The cubic root of 231130216 is about 613.6945150002.

Adding to 231130216 its reverse (612031132), we get a palindrome (843161348).

The spelling of 231130216 in words is "two hundred thirty-one million, one hundred thirty thousand, two hundred sixteen".