3301981 has 2 divisors, whose sum is σ = 3301982. Its totient is φ = 3301980.

The previous prime is 3301957. The next prime is 3301999. The reversal of 3301981 is 1891033.

3301981 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., 2669956 + 632025 = 1634^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 3301981 - 2¹³ = 3293789 is a prime.

It is a super-2 number, since 2×3301981² = 21806157048722, which contains 22 as substring.

3301981 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3301901) 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, 1650990 + 1650991.

It is an arithmetic number, because the mean of its divisors is an integer number (1650991).

Almost surely, 2^3301981 is an apocalyptic number.

It is an amenable number.

3301981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3301981 is an equidigital number, since it uses as much as digits as its factorization.

3301981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 3301981 is about 1817.1353829586. The cubic root of 3301981 is about 148.9103404856.

The spelling of 3301981 in words is "three million, three hundred one thousand, nine hundred eighty-one".