3019981 has 2 divisors, whose sum is σ = 3019982. Its totient is φ = 3019980.

The previous prime is 3019967. The next prime is 3020021. The reversal of 3019981 is 1899103.

3019981 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., 3006756 + 13225 = 1734^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 3019981 - 2⁵ = 3019949 is a prime.

It is a super-2 number, since 2×3019981² = 18240570480722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3019921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1509990 + 1509991.

It is an arithmetic number, because the mean of its divisors is an integer number (1509991).

Almost surely, 2^3019981 is an apocalyptic number.

It is an amenable number.

3019981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3019981 is an equidigital number, since it uses as much as digits as its factorization.

3019981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 3019981 is about 1737.8092530540. The cubic root of 3019981 is about 144.5444442096.

The spelling of 3019981 in words is "three million, nineteen thousand, nine hundred eighty-one".