206531938 has 16 divisors (see below), whose sum is σ = 326495520. Its totient is φ = 97713216.

The previous prime is 206531903. The next prime is 206531953. The reversal of 206531938 is 839135602.

It is a junction number, because it is equal to n+sod(n) for n = 206531897 and 206531906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34345 + ... + 39907.

It is an arithmetic number, because the mean of its divisors is an integer number (20405970).

Almost surely, 2^206531938 is an apocalyptic number.

206531938 is a deficient number, since it is larger than the sum of its proper divisors (119963582).

206531938 is a wasteful number, since it uses less digits than its factorization.

206531938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 206531938 is about 14371.2190853803. The cubic root of 206531938 is about 591.1019700122.

The spelling of 206531938 in words is "two hundred six million, five hundred thirty-one thousand, nine hundred thirty-eight".