205234279 has 2 divisors, whose sum is σ = 205234280. Its totient is φ = 205234278.

The previous prime is 205234261. The next prime is 205234283. The reversal of 205234279 is 972432502.

It is a happy number.

205234279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205234279 - 2⁹ = 205233767 is a prime.

It is a super-2 number, since 2×205234279² = 84242218553299682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205244279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102617139 + 102617140.

It is an arithmetic number, because the mean of its divisors is an integer number (102617140).

Almost surely, 2^205234279 is an apocalyptic number.

205234279 is a deficient number, since it is larger than the sum of its proper divisors (1).

205234279 is an equidigital number, since it uses as much as digits as its factorization.

205234279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 205234279 is about 14326.0001047047. Note that the first 3 decimals coincide. The cubic root of 205234279 is about 589.8613856114.

The spelling of 205234279 in words is "two hundred five million, two hundred thirty-four thousand, two hundred seventy-nine".