13231031287 has 2 divisors, whose sum is σ = 13231031288. Its totient is φ = 13231031286.

The previous prime is 13231031257. The next prime is 13231031339. The reversal of 13231031287 is 78213013231.

13231031287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13231031287 - 2¹¹ = 13231029239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231031207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615515643 + 6615515644.

It is an arithmetic number, because the mean of its divisors is an integer number (6615515644).

Almost surely, 2^13231031287 is an apocalyptic number.

13231031287 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231031287 is an equidigital number, since it uses as much as digits as its factorization.

13231031287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 13231031287 in words is "thirteen billion, two hundred thirty-one million, thirty-one thousand, two hundred eighty-seven".