206634231 has 48 divisors (see below), whose sum is σ = 323841024. Its totient is φ = 126637632.

The previous prime is 206634229. The next prime is 206634271. The reversal of 206634231 is 132436602.

206634231 is a `hidden beast` number, since 2 + 0 + 6 + 634 + 23 + 1 = 666.

It is not a de Polignac number, because 206634231 - 2¹ = 206634229 is a prime.

It is a super-2 number, since 2×206634231² = 85395410841922722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206634195 and 206634204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206634271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 651685 + ... + 652001.

It is an arithmetic number, because the mean of its divisors is an integer number (6746688).

Almost surely, 2^206634231 is an apocalyptic number.

206634231 is a deficient number, since it is larger than the sum of its proper divisors (117206793).

206634231 is a wasteful number, since it uses less digits than its factorization.

206634231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 206634231 is about 14374.7775982796. Note that the first 3 decimals coincide. The cubic root of 206634231 is about 591.1995426758.

The spelling of 206634231 in words is "two hundred six million, six hundred thirty-four thousand, two hundred thirty-one".