12205230313 has 4 divisors (see below), whose sum is σ = 12219472980. Its totient is φ = 12190987648.

The previous prime is 12205230287. The next prime is 12205230337. The reversal of 12205230313 is 31303250221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31303250221 = 139 ⋅225203239.

It can be written as a sum of positive squares in 2 ways, for example, as 4465981584 + 7739248729 = 66828^2 + 87973^2 .

It is a cyclic number.

It is not a de Polignac number, because 12205230313 - 2¹³ = 12205222121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12205230343) 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, 7120048 + ... + 7121761.

It is an arithmetic number, because the mean of its divisors is an integer number (3054868245).

Almost surely, 2^12205230313 is an apocalyptic number.

It is an amenable number.

12205230313 is a deficient number, since it is larger than the sum of its proper divisors (14242667).

12205230313 is an equidigital number, since it uses as much as digits as its factorization.

12205230313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14242666.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 12205230313 its reverse (31303250221), we get a palindrome (43508480534).

The spelling of 12205230313 in words is "twelve billion, two hundred five million, two hundred thirty thousand, three hundred thirteen".