1305210481 has 2 divisors, whose sum is σ = 1305210482. Its totient is φ = 1305210480.

The previous prime is 1305210443. The next prime is 1305210497. The reversal of 1305210481 is 1840125031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938870881 + 366339600 = 30641^2 + 19140^2 .

It is an emirp because it is prime and its reverse (1840125031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1305210481 - 2⁷ = 1305210353 is a prime.

It is a super-2 number, since 2×1305210481² = 3407148799424502722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1305210421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652605240 + 652605241.

It is an arithmetic number, because the mean of its divisors is an integer number (652605241).

Almost surely, 2^1305210481 is an apocalyptic number.

It is an amenable number.

1305210481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305210481 is an equidigital number, since it uses as much as digits as its factorization.

1305210481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1305210481 is about 36127.6968681924. The cubic root of 1305210481 is about 1092.8490628631.

The spelling of 1305210481 in words is "one billion, three hundred five million, two hundred ten thousand, four hundred eighty-one".