13312020233261 has 2 divisors, whose sum is σ = 13312020233262. Its totient is φ = 13312020233260.

The previous prime is 13312020233233. The next prime is 13312020233329. The reversal of 13312020233261 is 16233202021331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9726227316100 + 3585792917161 = 3118690^2 + 1893619^2 .

It is an emirp because it is prime and its reverse (16233202021331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13312020233261 - 2³⁸ = 13037142326317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13312020233201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6656010116630 + 6656010116631.

It is an arithmetic number, because the mean of its divisors is an integer number (6656010116631).

Almost surely, 2^{13312020233261} is an apocalyptic number.

It is an amenable number.

13312020233261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13312020233261 is an equidigital number, since it uses as much as digits as its factorization.

13312020233261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 13312020233261 its reverse (16233202021331), we get a palindrome (29545222254592).

The spelling of 13312020233261 in words is "thirteen trillion, three hundred twelve billion, twenty million, two hundred thirty-three thousand, two hundred sixty-one".