206315230154 has 32 divisors (see below), whose sum is σ = 352359953280. Its totient is φ = 89683264000.

The previous prime is 206315230133. The next prime is 206315230159. The reversal of 206315230154 is 451032513602.

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 206315230154.

It is not an unprimeable number, because it can be changed into a prime (206315230159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2493854 + ... + 2575254.

It is an arithmetic number, because the mean of its divisors is an integer number (11011248540).

Almost surely, 2^206315230154 is an apocalyptic number.

206315230154 is a deficient number, since it is larger than the sum of its proper divisors (146044723126).

206315230154 is a wasteful number, since it uses less digits than its factorization.

206315230154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86446.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 206315230154 its reverse (451032513602), we get a palindrome (657347743756).

The spelling of 206315230154 in words is "two hundred six billion, three hundred fifteen million, two hundred thirty thousand, one hundred fifty-four".