3011881 has 2 divisors, whose sum is σ = 3011882. Its totient is φ = 3011880.

The previous prime is 3011857. The next prime is 3011887. The reversal of 3011881 is 1881103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 467856 = 1595^2 + 684^2 .

It is a cyclic number.

It is not a de Polignac number, because 3011881 - 2⁹ = 3011369 is a prime.

It is a super-2 number, since 2×3011881² = 18142854316322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3011887) 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, 1505940 + 1505941.

It is an arithmetic number, because the mean of its divisors is an integer number (1505941).

Almost surely, 2^3011881 is an apocalyptic number.

It is an amenable number.

3011881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3011881 is an equidigital number, since it uses as much as digits as its factorization.

3011881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 3011881 is about 1735.4771678129. The cubic root of 3011881 is about 144.4150992107.

Adding to 3011881 its reverse (1881103), we get a palindrome (4892984).

It can be divided in two parts, 30 and 11881, that added together give a palindrome (11911).

The spelling of 3011881 in words is "three million, eleven thousand, eight hundred eighty-one".