1307887067321 has 2 divisors, whose sum is σ = 1307887067322. Its totient is φ = 1307887067320.

The previous prime is 1307887067309. The next prime is 1307887067327. The reversal of 1307887067321 is 1237607887031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1305223991296 + 2663076025 = 1142464^2 + 51605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1307887067321 is a prime.

It is a super-2 number, since 2×1307887067321² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1307887067327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653943533660 + 653943533661.

It is an arithmetic number, because the mean of its divisors is an integer number (653943533661).

Almost surely, 2^{1307887067321} is an apocalyptic number.

It is an amenable number.

1307887067321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307887067321 is an equidigital number, since it uses as much as digits as its factorization.

1307887067321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 1307887067321 in words is "one trillion, three hundred seven billion, eight hundred eighty-seven million, sixty-seven thousand, three hundred twenty-one".