206213234 has 4 divisors (see below), whose sum is σ = 309319854. Its totient is φ = 103106616.

The previous prime is 206213233. The next prime is 206213237. The reversal of 206213234 is 432312602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432312602 = 2 ⋅216156301.

It can be written as a sum of positive squares in only one way, i.e., 204404209 + 1809025 = 14297^2 + 1345^2 .

It is not an unprimeable number, because it can be changed into a prime (206213233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51553307 + ... + 51553310.

Almost surely, 2^206213234 is an apocalyptic number.

206213234 is a deficient number, since it is larger than the sum of its proper divisors (103106620).

206213234 is a wasteful number, since it uses less digits than its factorization.

206213234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103106619.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 206213234 is about 14360.1265314760. The cubic root of 206213234 is about 590.7977659774.

Adding to 206213234 its reverse (432312602), we get a palindrome (638525836).

The spelling of 206213234 in words is "two hundred six million, two hundred thirteen thousand, two hundred thirty-four".