206321980723 has 8 divisors (see below), whose sum is σ = 226623686400. Its totient is φ = 186964540488.

The previous prime is 206321980699. The next prime is 206321980741. The reversal of 206321980723 is 327089123602.

206321980723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206321980723 - 2³⁷ = 68883027251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206321980723.

It is not an unprimeable number, because it can be changed into a prime (206321980763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236065903 + ... + 236066776.

It is an arithmetic number, because the mean of its divisors is an integer number (28327960800).

Almost surely, 2^206321980723 is an apocalyptic number.

206321980723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

206321980723 is a deficient number, since it is larger than the sum of its proper divisors (20301705677).

206321980723 is a wasteful number, since it uses less digits than its factorization.

206321980723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472132721.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 206321980723 in words is "two hundred six billion, three hundred twenty-one million, nine hundred eighty thousand, seven hundred twenty-three".