12003881 has 2 divisors, whose sum is σ = 12003882. Its totient is φ = 12003880.

The previous prime is 12003869. The next prime is 12003911. The reversal of 12003881 is 18830021.

12003881 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 can be written as a sum of positive squares in only one way, i.e., 10272025 + 1731856 = 3205^2 + 1316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12003881 is a prime.

It is a super-2 number, since 2×12003881² = 288186318124322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12003821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001940 + 6001941.

It is an arithmetic number, because the mean of its divisors is an integer number (6001941).

Almost surely, 2^12003881 is an apocalyptic number.

It is an amenable number.

12003881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003881 is an equidigital number, since it uses as much as digits as its factorization.

12003881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 12003881 is about 3464.6617439513. The cubic root of 12003881 is about 228.9675271613.

The spelling of 12003881 in words is "twelve million, three thousand, eight hundred eighty-one".