206023400243 has 8 divisors (see below), whose sum is σ = 214987764768. Its totient is φ = 197059604544.

The previous prime is 206023400237. The next prime is 206023400263. The reversal of 206023400243 is 342004320602.

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 206023400243 - 2⁸ = 206023399987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206023400263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705521 + ... + 953837.

It is an arithmetic number, because the mean of its divisors is an integer number (26873470596).

Almost surely, 2^206023400243 is an apocalyptic number.

206023400243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

206023400243 is a deficient number, since it is larger than the sum of its proper divisors (8964364525).

206023400243 is a wasteful number, since it uses less digits than its factorization.

206023400243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284413.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 206023400243 its reverse (342004320602), we get a palindrome (548027720845).

The spelling of 206023400243 in words is "two hundred six billion, twenty-three million, four hundred thousand, two hundred forty-three".