206531126 has 4 divisors (see below), whose sum is σ = 309796692. Its totient is φ = 103265562.

The previous prime is 206531081. The next prime is 206531153. The reversal of 206531126 is 621135602.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 206531095 and 206531104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51632780 + ... + 51632783.

It is an arithmetic number, because the mean of its divisors is an integer number (77449173).

Almost surely, 2^206531126 is an apocalyptic number.

206531126 is a deficient number, since it is larger than the sum of its proper divisors (103265566).

206531126 is a wasteful number, since it uses less digits than its factorization.

206531126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103265565.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 206531126 is about 14371.1908344437. The cubic root of 206531126 is about 591.1011953533.

Adding to 206531126 its reverse (621135602), we get a palindrome (827666728).

The spelling of 206531126 in words is "two hundred six million, five hundred thirty-one thousand, one hundred twenty-six".