205213424303 has 4 divisors (see below), whose sum is σ = 205551503040. Its totient is φ = 204875345568.

The previous prime is 205213424291. The next prime is 205213424323. The reversal of 205213424303 is 303424312502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205213424303 - 2¹² = 205213420207 is a prime.

It is a super-2 number, since 2×205213424303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205213424323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169038458 + ... + 169039671.

It is an arithmetic number, because the mean of its divisors is an integer number (51387875760).

Almost surely, 2^205213424303 is an apocalyptic number.

205213424303 is a deficient number, since it is larger than the sum of its proper divisors (338078737).

205213424303 is an equidigital number, since it uses as much as digits as its factorization.

205213424303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338078736.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 205213424303 its reverse (303424312502), we get a palindrome (508637736805).

The spelling of 205213424303 in words is "two hundred five billion, two hundred thirteen million, four hundred twenty-four thousand, three hundred three".