1305320523452 has 24 divisors (see below), whose sum is σ = 2502953429760. Its totient is φ = 590713728560.

The previous prime is 1305320523431. The next prime is 1305320523517. The reversal of 1305320523452 is 2543250235031.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 65334452 + ... + 65354427.

It is an arithmetic number, because the mean of its divisors is an integer number (104289726240).

Almost surely, 2^{1305320523452} is an apocalyptic number.

It is an amenable number.

1305320523452 is a deficient number, since it is larger than the sum of its proper divisors (1197632906308).

1305320523452 is a wasteful number, since it uses less digits than its factorization.

1305320523452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130689121 (or 130689119 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 1305320523452 its reverse (2543250235031), we get a palindrome (3848570758483).

The spelling of 1305320523452 in words is "one trillion, three hundred five billion, three hundred twenty million, five hundred twenty-three thousand, four hundred fifty-two".