3003281 has 2 divisors, whose sum is σ = 3003282. Its totient is φ = 3003280.

The previous prime is 3003257. The next prime is 3003307. The reversal of 3003281 is 1823003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2202256 + 801025 = 1484^2 + 895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3003281 is a prime.

It is a super-2 number, since 2×3003281² = 18039393529922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3003241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1501640 + 1501641.

It is an arithmetic number, because the mean of its divisors is an integer number (1501641).

Almost surely, 2^3003281 is an apocalyptic number.

It is an amenable number.

3003281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3003281 is an equidigital number, since it uses as much as digits as its factorization.

3003281 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 3003281 is about 1732.9976918623. The cubic root of 3003281 is about 144.2775158841.

Adding to 3003281 its reverse (1823003), we get a palindrome (4826284).

The spelling of 3003281 in words is "three million, three thousand, two hundred eighty-one".