206434223 has 8 divisors (see below), whose sum is σ = 216235008. Its totient is φ = 196702264.

The previous prime is 206434147. The next prime is 206434229. The reversal of 206434223 is 322434602.

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 206434223 - 2⁸ = 206433967 is a prime.

It is a super-2 number, since 2×206434223² = 85230176851227458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206434192 and 206434201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206434229) 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, 11015 + ... + 23112.

It is an arithmetic number, because the mean of its divisors is an integer number (27029376).

Almost surely, 2^206434223 is an apocalyptic number.

206434223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

206434223 is a deficient number, since it is larger than the sum of its proper divisors (9800785).

206434223 is a wasteful number, since it uses less digits than its factorization.

206434223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34413.

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

The square root of 206434223 is about 14367.8190063767. The cubic root of 206434223 is about 591.0087340038.

Adding to 206434223 its reverse (322434602), we get a palindrome (528868825).

The spelling of 206434223 in words is "two hundred six million, four hundred thirty-four thousand, two hundred twenty-three".