3081161 has 2 divisors, whose sum is σ = 3081162. Its totient is φ = 3081160.

The previous prime is 3081151. The next prime is 3081181. The reversal of 3081161 is 1611803.

3081161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (3081181) can be obtained adding 3081161 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2383936 + 697225 = 1544^2 + 835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3081161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3081151) 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, 1540580 + 1540581.

It is an arithmetic number, because the mean of its divisors is an integer number (1540581).

Almost surely, 2^3081161 is an apocalyptic number.

It is an amenable number.

3081161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3081161 is an equidigital number, since it uses as much as digits as its factorization.

3081161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 3081161 is about 1755.3236168866. The cubic root of 3081161 is about 145.5140061229.

Adding to 3081161 its reverse (1611803), we get a palindrome (4692964).

The spelling of 3081161 in words is "three million, eighty-one thousand, one hundred sixty-one".