205230431212 has 12 divisors (see below), whose sum is σ = 359368715160. Its totient is φ = 102553655456.

The previous prime is 205230431201. The next prime is 205230431213. The reversal of 205230431212 is 212134032502.

It is not an unprimeable number, because it can be changed into a prime (205230431213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15382537 + ... + 15395872.

It is an arithmetic number, because the mean of its divisors is an integer number (29947392930).

Almost surely, 2^205230431212 is an apocalyptic number.

It is an amenable number.

205230431212 is a deficient number, since it is larger than the sum of its proper divisors (154138283948).

205230431212 is a wasteful number, since it uses less digits than its factorization.

205230431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30780080 (or 30780078 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 205230431212 its reverse (212134032502), we get a palindrome (417364463714).

The spelling of 205230431212 in words is "two hundred five billion, two hundred thirty million, four hundred thirty-one thousand, two hundred twelve".