1315243143321 has 16 divisors (see below), whose sum is σ = 1770267230208. Its totient is φ = 868545795600.

The previous prime is 1315243143299. The next prime is 1315243143329. The reversal of 1315243143321 is 1233413425131.

It is not a de Polignac number, because 1315243143321 - 2¹⁷ = 1315243012249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1315243143329) 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 in 15 ways as a sum of consecutive naturals, for example, 2494995 + ... + 2975816.

It is an arithmetic number, because the mean of its divisors is an integer number (110641701888).

Almost surely, 2^{1315243143321} is an apocalyptic number.

It is an amenable number.

1315243143321 is a deficient number, since it is larger than the sum of its proper divisors (455024086887).

1315243143321 is a wasteful number, since it uses less digits than its factorization.

1315243143321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5471572.

The product of its digits is 25920, while the sum is 33.

Adding to 1315243143321 its reverse (1233413425131), we get a palindrome (2548656568452).

The spelling of 1315243143321 in words is "one trillion, three hundred fifteen billion, two hundred forty-three million, one hundred forty-three thousand, three hundred twenty-one".