1305666611231 has 2 divisors, whose sum is σ = 1305666611232. Its totient is φ = 1305666611230.

The previous prime is 1305666611189. The next prime is 1305666611239. The reversal of 1305666611231 is 1321166665031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1305666611231 - 2³⁰ = 1304592869407 is a prime.

It is a super-2 number, since 2×1305666611231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305666611239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652833305615 + 652833305616.

It is an arithmetic number, because the mean of its divisors is an integer number (652833305616).

Almost surely, 2^{1305666611231} is an apocalyptic number.

1305666611231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305666611231 is an equidigital number, since it uses as much as digits as its factorization.

1305666611231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 1305666611231 in words is "one trillion, three hundred five billion, six hundred sixty-six million, six hundred eleven thousand, two hundred thirty-one".