1305201281 has 2 divisors, whose sum is σ = 1305201282. Its totient is φ = 1305201280.

The previous prime is 1305201259. The next prime is 1305201353. The reversal of 1305201281 is 1821025031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254293056 + 50908225 = 35416^2 + 7135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305201281 - 2¹⁴ = 1305184897 is a prime.

It is a super-2 number, since 2×1305201281² = 3407100767848081922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1305201221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652600640 + 652600641.

It is an arithmetic number, because the mean of its divisors is an integer number (652600641).

Almost surely, 2^1305201281 is an apocalyptic number.

It is an amenable number.

1305201281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305201281 is an equidigital number, since it uses as much as digits as its factorization.

1305201281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1305201281 is about 36127.5695418333. The cubic root of 1305201281 is about 1092.8464951457.

The spelling of 1305201281 in words is "one billion, three hundred five million, two hundred one thousand, two hundred eighty-one".