12887901731 has 2 divisors, whose sum is σ = 12887901732. Its totient is φ = 12887901730.

The previous prime is 12887901701. The next prime is 12887901751. The reversal of 12887901731 is 13710978821.

It is a strong prime.

It is an emirp because it is prime and its reverse (13710978821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12887901731 - 2⁶ = 12887901667 is a prime.

It is a super-2 number, since 2×12887901731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12887901701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6443950865 + 6443950866.

It is an arithmetic number, because the mean of its divisors is an integer number (6443950866).

Almost surely, 2^12887901731 is an apocalyptic number.

12887901731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12887901731 is an equidigital number, since it uses as much as digits as its factorization.

12887901731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 12887901731 in words is "twelve billion, eight hundred eighty-seven million, nine hundred one thousand, seven hundred thirty-one".