1307281 has 2 divisors, whose sum is σ = 1307282. Its totient is φ = 1307280.

The previous prime is 1307261. The next prime is 1307303. The reversal of 1307281 is 1827031.

It is an a-pointer prime, because the next prime (1307303) can be obtained adding 1307281 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 173056 = 1065^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 1307281 - 2⁷ = 1307153 is a prime.

It is a super-2 number, since 2×1307281² = 3417967225922, which contains 22 as substring.

1307281 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1307221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653640 + 653641.

It is an arithmetic number, because the mean of its divisors is an integer number (653641).

2^1307281 is an apocalyptic number.

It is an amenable number.

1307281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307281 is an equidigital number, since it uses as much as digits as its factorization.

1307281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1307281 is about 1143.3638965789. The cubic root of 1307281 is about 109.3426637470.

The spelling of 1307281 in words is "one million, three hundred seven thousand, two hundred eighty-one".