12031071881 has 2 divisors, whose sum is σ = 12031071882. Its totient is φ = 12031071880.

The previous prime is 12031071847. The next prime is 12031071911. The reversal of 12031071881 is 18817013021.

12031071881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10240428025 + 1790643856 = 101195^2 + 42316^2 .

It is a cyclic number.

It is not a de Polignac number, because 12031071881 - 2¹⁸ = 12030809737 is a prime.

It is a super-2 number, since 2×12031071881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12031071841) 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, 6015535940 + 6015535941.

It is an arithmetic number, because the mean of its divisors is an integer number (6015535941).

Almost surely, 2^12031071881 is an apocalyptic number.

It is an amenable number.

12031071881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031071881 is an equidigital number, since it uses as much as digits as its factorization.

12031071881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 32.

The spelling of 12031071881 in words is "twelve billion, thirty-one million, seventy-one thousand, eight hundred eighty-one".