12120310313 has 4 divisors (see below), whose sum is σ = 12130109700. Its totient is φ = 12110510928.

The previous prime is 12120310309. The next prime is 12120310357. The reversal of 12120310313 is 31301302121.

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 9551543824 + 2568766489 = 97732^2 + 50683^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120310313 - 2² = 12120310309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120310291 and 12120310300.

It is not an unprimeable number, because it can be changed into a prime (12120310513) 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, 4897838 + ... + 4900311.

It is an arithmetic number, because the mean of its divisors is an integer number (3032527425).

Almost surely, 2^12120310313 is an apocalyptic number.

It is an amenable number.

12120310313 is a deficient number, since it is larger than the sum of its proper divisors (9799387).

12120310313 is an equidigital number, since it uses as much as digits as its factorization.

12120310313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9799386.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12120310313 its reverse (31301302121), we get a palindrome (43421612434).

The spelling of 12120310313 in words is "twelve billion, one hundred twenty million, three hundred ten thousand, three hundred thirteen".