130319281 has 2 divisors, whose sum is σ = 130319282. Its totient is φ = 130319280.

The previous prime is 130319251. The next prime is 130319327. The reversal of 130319281 is 182913031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91680625 + 38638656 = 9575^2 + 6216^2 .

It is a cyclic number.

It is not a de Polignac number, because 130319281 - 2⁵ = 130319249 is a prime.

It is a super-2 number, since 2×130319281² = 33966230000713922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (130319251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65159640 + 65159641.

It is an arithmetic number, because the mean of its divisors is an integer number (65159641).

Almost surely, 2^130319281 is an apocalyptic number.

It is an amenable number.

130319281 is a deficient number, since it is larger than the sum of its proper divisors (1).

130319281 is an equidigital number, since it uses as much as digits as its factorization.

130319281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 130319281 is about 11415.7470627200. The cubic root of 130319281 is about 506.9940840680.

The spelling of 130319281 in words is "one hundred thirty million, three hundred nineteen thousand, two hundred eighty-one".