205223113 has 2 divisors, whose sum is σ = 205223114. Its totient is φ = 205223112.

The previous prime is 205223107. The next prime is 205223143. The reversal of 205223113 is 311322502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201270969 + 3952144 = 14187^2 + 1988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205223113 is a prime.

It is a super-2 number, since 2×205223113² = 84233052218821538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205223143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102611556 + 102611557.

It is an arithmetic number, because the mean of its divisors is an integer number (102611557).

Almost surely, 2^205223113 is an apocalyptic number.

It is an amenable number.

205223113 is a deficient number, since it is larger than the sum of its proper divisors (1).

205223113 is an equidigital number, since it uses as much as digits as its factorization.

205223113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 205223113 is about 14325.6103883918. The cubic root of 205223113 is about 589.8506880617.

Adding to 205223113 its reverse (311322502), we get a palindrome (516545615).

The spelling of 205223113 in words is "two hundred five million, two hundred twenty-three thousand, one hundred thirteen".