205323143027 has 2 divisors, whose sum is σ = 205323143028. Its totient is φ = 205323143026.

The previous prime is 205323142967. The next prime is 205323143059. The reversal of 205323143027 is 720341323502.

It is a happy number.

It is an a-pointer prime, because the next prime (205323143059) can be obtained adding 205323143027 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205323143027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205323142984 and 205323143002.

It is not a weakly prime, because it can be changed into another prime (205323143087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102661571513 + 102661571514.

It is an arithmetic number, because the mean of its divisors is an integer number (102661571514).

Almost surely, 2^205323143027 is an apocalyptic number.

205323143027 is a deficient number, since it is larger than the sum of its proper divisors (1).

205323143027 is an equidigital number, since it uses as much as digits as its factorization.

205323143027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 32.

Adding to 205323143027 its reverse (720341323502), we get a palindrome (925664466529).

The spelling of 205323143027 in words is "two hundred five billion, three hundred twenty-three million, one hundred forty-three thousand, twenty-seven".