1312232131387 has 2 divisors, whose sum is σ = 1312232131388. Its totient is φ = 1312232131386.

The previous prime is 1312232131313. The next prime is 1312232131393. The reversal of 1312232131387 is 7831312322131.

It is a strong prime.

It is an emirp because it is prime and its reverse (7831312322131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312232131387 - 2¹¹ = 1312232129339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312232131787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656116065693 + 656116065694.

It is an arithmetic number, because the mean of its divisors is an integer number (656116065694).

Almost surely, 2^{1312232131387} is an apocalyptic number.

1312232131387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312232131387 is an equidigital number, since it uses as much as digits as its factorization.

1312232131387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The spelling of 1312232131387 in words is "one trillion, three hundred twelve billion, two hundred thirty-two million, one hundred thirty-one thousand, three hundred eighty-seven".