205431056 has 20 divisors (see below), whose sum is σ = 401065104. Its totient is φ = 101930400.

The previous prime is 205431049. The next prime is 205431113. The reversal of 205431056 is 650134502.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 46910 + ... + 51101.

Almost surely, 2^205431056 is an apocalyptic number.

It is an amenable number.

205431056 is a deficient number, since it is larger than the sum of its proper divisors (195634048).

205431056 is a wasteful number, since it uses less digits than its factorization.

205431056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98150 (or 98144 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 205431056 is about 14332.8662869644. The cubic root of 205431056 is about 590.0498435340.

Adding to 205431056 its reverse (650134502), we get a palindrome (855565558).

The spelling of 205431056 in words is "two hundred five million, four hundred thirty-one thousand, fifty-six".