205134329 has 2 divisors, whose sum is σ = 205134330. Its totient is φ = 205134328.

The previous prime is 205134287. The next prime is 205134343. The reversal of 205134329 is 923431502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121594729 + 83539600 = 11027^2 + 9140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205134329 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_11347391 and since 205134329 and 11347391 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (205134229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102567164 + 102567165.

It is an arithmetic number, because the mean of its divisors is an integer number (102567165).

Almost surely, 2^205134329 is an apocalyptic number.

It is an amenable number.

205134329 is a deficient number, since it is larger than the sum of its proper divisors (1).

205134329 is an equidigital number, since it uses as much as digits as its factorization.

205134329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 205134329 is about 14322.5112672324. The cubic root of 205134329 is about 589.7656150298.

It can be divided in two parts, 20513 and 4329, that added together give a palindrome (24842).

The spelling of 205134329 in words is "two hundred five million, one hundred thirty-four thousand, three hundred twenty-nine".