1305320523431 has 2 divisors, whose sum is σ = 1305320523432. Its totient is φ = 1305320523430.

The previous prime is 1305320523407. The next prime is 1305320523517. The reversal of 1305320523431 is 1343250235031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1305320523431 - 2³⁴ = 1288140654247 is a prime.

It is a super-2 number, since 2×1305320523431² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305320523131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652660261715 + 652660261716.

It is an arithmetic number, because the mean of its divisors is an integer number (652660261716).

Almost surely, 2^{1305320523431} is an apocalyptic number.

1305320523431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305320523431 is an equidigital number, since it uses as much as digits as its factorization.

1305320523431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 1305320523431 its reverse (1343250235031), we get a palindrome (2648570758462).

The spelling of 1305320523431 in words is "one trillion, three hundred five billion, three hundred twenty million, five hundred twenty-three thousand, four hundred thirty-one".