2130203281 has 2 divisors, whose sum is σ = 2130203282. Its totient is φ = 2130203280.

The previous prime is 2130203233. The next prime is 2130203303. The reversal of 2130203281 is 1823020312.

It is an a-pointer prime, because the next prime (2130203303) can be obtained adding 2130203281 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1373073025 + 757130256 = 37055^2 + 27516^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130203281 - 2¹¹ = 2130201233 is a prime.

It is a super-2 number, since 2×2130203281² = 9075532036766329922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2130204281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065101640 + 1065101641.

It is an arithmetic number, because the mean of its divisors is an integer number (1065101641).

Almost surely, 2^2130203281 is an apocalyptic number.

It is an amenable number.

2130203281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130203281 is an equidigital number, since it uses as much as digits as its factorization.

2130203281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2130203281 is about 46154.1252869123. The cubic root of 2130203281 is about 1286.6892812462.

Adding to 2130203281 its reverse (1823020312), we get a palindrome (3953223593).

The spelling of 2130203281 in words is "two billion, one hundred thirty million, two hundred three thousand, two hundred eighty-one".