12313936321 has 2 divisors, whose sum is σ = 12313936322. Its totient is φ = 12313936320.

The previous prime is 12313936303. The next prime is 12313936363. The reversal of 12313936321 is 12363931321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10646112400 + 1667823921 = 103180^2 + 40839^2 .

It is a cyclic number.

It is not a de Polignac number, because 12313936321 - 2¹¹ = 12313934273 is a prime.

It is not a weakly prime, because it can be changed into another prime (12313936301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156968160 + 6156968161.

It is an arithmetic number, because the mean of its divisors is an integer number (6156968161).

Almost surely, 2^12313936321 is an apocalyptic number.

It is an amenable number.

12313936321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12313936321 is an equidigital number, since it uses as much as digits as its factorization.

12313936321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 34.

Subtracting 12313936321 from its reverse (12363931321), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 12313936321 in words is "twelve billion, three hundred thirteen million, nine hundred thirty-six thousand, three hundred twenty-one".