2000281 has 2 divisors, whose sum is σ = 2000282. Its totient is φ = 2000280.

The previous prime is 2000269. The next prime is 2000291. The reversal of 2000281 is 1820002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1190281 + 810000 = 1091^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000281 - 2⁵ = 2000249 is a prime.

It is a super-2 number, since 2×2000281² = 8002248157922, which contains 22 as substring.

2000281 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2000221) 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, 1000140 + 1000141.

It is an arithmetic number, because the mean of its divisors is an integer number (1000141).

2^2000281 is an apocalyptic number.

2000281 is the 633-rd centered decagonal number.

It is an amenable number.

2000281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000281 is an equidigital number, since it uses as much as digits as its factorization.

2000281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2000281 is about 1414.3129073865. The cubic root of 2000281 is about 125.9980053434.

Adding to 2000281 its reverse (1820002), we get a palindrome (3820283).

The spelling of 2000281 in words is "two million, two hundred eighty-one", and thus it is an aban number.