13321214431387 has 2 divisors, whose sum is σ = 13321214431388. Its totient is φ = 13321214431386.

The previous prime is 13321214431333. The next prime is 13321214431411. The reversal of 13321214431387 is 78313441212331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321214431387 is a prime.

It is not a weakly prime, because it can be changed into another prime (13321214431687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660607215693 + 6660607215694.

It is an arithmetic number, because the mean of its divisors is an integer number (6660607215694).

Almost surely, 2^{13321214431387} is an apocalyptic number.

13321214431387 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321214431387 is an equidigital number, since it uses as much as digits as its factorization.

13321214431387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The spelling of 13321214431387 in words is "thirteen trillion, three hundred twenty-one billion, two hundred fourteen million, four hundred thirty-one thousand, three hundred eighty-seven".