205030411 has 2 divisors, whose sum is σ = 205030412. Its totient is φ = 205030410.

The previous prime is 205030361. The next prime is 205030429. The reversal of 205030411 is 114030502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205030411 - 2¹⁹ = 204506123 is a prime.

It is not a weakly prime, because it can be changed into another prime (205030471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102515205 + 102515206.

It is an arithmetic number, because the mean of its divisors is an integer number (102515206).

Almost surely, 2^205030411 is an apocalyptic number.

205030411 is a deficient number, since it is larger than the sum of its proper divisors (1).

205030411 is an equidigital number, since it uses as much as digits as its factorization.

205030411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 205030411 is about 14318.8830220796. The cubic root of 205030411 is about 589.6660093787. Note that the first 3 decimals are identical.

Adding to 205030411 its reverse (114030502), we get a palindrome (319060913).

Subtracting from 205030411 its reverse (114030502), we obtain a palindrome (90999909).

The spelling of 205030411 in words is "two hundred five million, thirty thousand, four hundred eleven".