205351243 has 8 divisors (see below), whose sum is σ = 206447616. Its totient is φ = 204258600.

The previous prime is 205351229. The next prime is 205351249. The reversal of 205351243 is 342153502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205351243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205351249) 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, 224958 + ... + 225868.

It is an arithmetic number, because the mean of its divisors is an integer number (25805952).

Almost surely, 2^205351243 is an apocalyptic number.

205351243 is a deficient number, since it is larger than the sum of its proper divisors (1096373).

205351243 is an equidigital number, since it uses as much as digits as its factorization.

205351243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 205351243 is about 14330.0817513369. The cubic root of 205351243 is about 589.9734192755.

The spelling of 205351243 in words is "two hundred five million, three hundred fifty-one thousand, two hundred forty-three".