206431543034 has 8 divisors (see below), whose sum is σ = 309730991508. Its totient is φ = 103187879200.

The previous prime is 206431543027. The next prime is 206431543039. The reversal of 206431543034 is 430345134602.

It can be written as a sum of positive squares in 2 ways, for example, as 188353396009 + 18078147025 = 433997^2 + 134455^2 .

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

It is a super-2 number, since 2×206431543034² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206431542985 and 206431543003.

It is not an unprimeable number, because it can be changed into a prime (206431543039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13936907 + ... + 13951710.

Almost surely, 2^206431543034 is an apocalyptic number.

206431543034 is a deficient number, since it is larger than the sum of its proper divisors (103299448474).

206431543034 is a wasteful number, since it uses less digits than its factorization.

206431543034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27892320.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 206431543034 its reverse (430345134602), we get a palindrome (636776677636).

The spelling of 206431543034 in words is "two hundred six billion, four hundred thirty-one million, five hundred forty-three thousand, thirty-four".