13665543211031 has 2 divisors, whose sum is σ = 13665543211032. Its totient is φ = 13665543211030.

The previous prime is 13665543210953. The next prime is 13665543211063. The reversal of 13665543211031 is 13011234556631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13665543211031 is a prime.

It is a super-2 number, since 2×13665543211031² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13665543211031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13665543217031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6832771605515 + 6832771605516.

It is an arithmetic number, because the mean of its divisors is an integer number (6832771605516).

Almost surely, 2^{13665543211031} is an apocalyptic number.

13665543211031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13665543211031 is an equidigital number, since it uses as much as digits as its factorization.

13665543211031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

Adding to 13665543211031 its reverse (13011234556631), we get a palindrome (26676777767662).

The spelling of 13665543211031 in words is "thirteen trillion, six hundred sixty-five billion, five hundred forty-three million, two hundred eleven thousand, thirty-one".