130787281 has 2 divisors, whose sum is σ = 130787282. Its totient is φ = 130787280.

The previous prime is 130787257. The next prime is 130787297. The reversal of 130787281 is 182787031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130416400 + 370881 = 11420^2 + 609^2 .

It is a cyclic number.

It is not a de Polignac number, because 130787281 - 2⁵ = 130787249 is a prime.

It is a super-2 number, since 2×130787281² = 34210625742745922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 130787281.

It is not a weakly prime, because it can be changed into another prime (130787201) 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, 65393640 + 65393641.

It is an arithmetic number, because the mean of its divisors is an integer number (65393641).

Almost surely, 2^130787281 is an apocalyptic number.

It is an amenable number.

130787281 is a deficient number, since it is larger than the sum of its proper divisors (1).

130787281 is an equidigital number, since it uses as much as digits as its factorization.

130787281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 130787281 is about 11436.2266941505. The cubic root of 130787281 is about 507.6002613595.

It can be divided in two parts, 1307 and 87281, that added together give a palindrome (88588).

The spelling of 130787281 in words is "one hundred thirty million, seven hundred eighty-seven thousand, two hundred eighty-one".