3240161 has 2 divisors, whose sum is σ = 3240162. Its totient is φ = 3240160.

The previous prime is 3240143. The next prime is 3240163. The reversal of 3240161 is 1610423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2421136 + 819025 = 1556^2 + 905^2 .

It is an emirp because it is prime and its reverse (1610423) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3240161 is a prime.

Together with 3240163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3240163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620080 + 1620081.

It is an arithmetic number, because the mean of its divisors is an integer number (1620081).

Almost surely, 2^3240161 is an apocalyptic number.

It is an amenable number.

3240161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240161 is an equidigital number, since it uses as much as digits as its factorization.

3240161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3240161 is about 1800.0447216667. The cubic root of 3240161 is about 147.9751754078.

Adding to 3240161 its reverse (1610423), we get a palindrome (4850584).

The spelling of 3240161 in words is "three million, two hundred forty thousand, one hundred sixty-one".