1307288561 has 2 divisors, whose sum is σ = 1307288562. Its totient is φ = 1307288560.

The previous prime is 1307288539. The next prime is 1307288573. The reversal of 1307288561 is 1658827031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1213198561 + 94090000 = 34831^2 + 9700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1307288561 - 2¹⁰ = 1307287537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1307288531) 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, 653644280 + 653644281.

It is an arithmetic number, because the mean of its divisors is an integer number (653644281).

Almost surely, 2^1307288561 is an apocalyptic number.

It is an amenable number.

1307288561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307288561 is an equidigital number, since it uses as much as digits as its factorization.

1307288561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1307288561 is about 36156.4456355986. The cubic root of 1307288561 is about 1093.4287455050.

The spelling of 1307288561 in words is "one billion, three hundred seven million, two hundred eighty-eight thousand, five hundred sixty-one".