13311211240381 has 2 divisors, whose sum is σ = 13311211240382. Its totient is φ = 13311211240380.

The previous prime is 13311211240363. The next prime is 13311211240433. The reversal of 13311211240381 is 18304211211331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12648763380100 + 662447860281 = 3556510^2 + 813909^2 .

It is a cyclic number.

It is not a de Polignac number, because 13311211240381 - 2⁷ = 13311211240253 is a prime.

It is a super-2 number, since 2×13311211240381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13311211240081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6655605620190 + 6655605620191.

It is an arithmetic number, because the mean of its divisors is an integer number (6655605620191).

Almost surely, 2^{13311211240381} is an apocalyptic number.

It is an amenable number.

13311211240381 is a deficient number, since it is larger than the sum of its proper divisors (1).

13311211240381 is an equidigital number, since it uses as much as digits as its factorization.

13311211240381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 13311211240381 in words is "thirteen trillion, three hundred eleven billion, two hundred eleven million, two hundred forty thousand, three hundred eighty-one".