205231793 has 8 divisors (see below), whose sum is σ = 221820648. Its totient is φ = 188757504.

The previous prime is 205231781. The next prime is 205231841. The reversal of 205231793 is 397132502.

It can be written as a sum of positive squares in 4 ways, for example, as 7463824 + 197767969 = 2732^2 + 14063^2 .

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

It is not a de Polignac number, because 205231793 - 2¹² = 205227697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205231703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24896 + ... + 32097.

It is an arithmetic number, because the mean of its divisors is an integer number (27727581).

Almost surely, 2^205231793 is an apocalyptic number.

It is an amenable number.

205231793 is a deficient number, since it is larger than the sum of its proper divisors (16588855).

205231793 is a wasteful number, since it uses less digits than its factorization.

205231793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57283.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 205231793 is about 14325.9133391208. The cubic root of 205231793 is about 589.8590039408.

The spelling of 205231793 in words is "two hundred five million, two hundred thirty-one thousand, seven hundred ninety-three".