1324312205 has 4 divisors (see below), whose sum is σ = 1589174652. Its totient is φ = 1059449760.

The previous prime is 1324312183. The next prime is 1324312207. The reversal of 1324312205 is 5022134231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 651117289 + 673194916 = 25517^2 + 25946^2 .

It is not a de Polignac number, because 1324312205 - 2¹⁶ = 1324246669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1324312207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132431216 + ... + 132431225.

It is an arithmetic number, because the mean of its divisors is an integer number (397293663).

Almost surely, 2^1324312205 is an apocalyptic number.

It is an amenable number.

1324312205 is a deficient number, since it is larger than the sum of its proper divisors (264862447).

1324312205 is an equidigital number, since it uses as much as digits as its factorization.

1324312205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264862446.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1324312205 is about 36391.1006291373. The cubic root of 1324312205 is about 1098.1545378442.

Adding to 1324312205 its reverse (5022134231), we get a palindrome (6346446436).

The spelling of 1324312205 in words is "one billion, three hundred twenty-four million, three hundred twelve thousand, two hundred five".