1326531711243 has 8 divisors (see below), whose sum is σ = 1769700940288. Its totient is φ = 883858478184.

The previous prime is 1326531711233. The next prime is 1326531711247. The reversal of 1326531711243 is 3421171356231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1326531711243 - 2³³ = 1317941776651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326531711247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123992755 + ... + 124003452.

It is an arithmetic number, because the mean of its divisors is an integer number (221212617536).

Almost surely, 2^{1326531711243} is an apocalyptic number.

1326531711243 is a deficient number, since it is larger than the sum of its proper divisors (443169229045).

1326531711243 is a wasteful number, since it uses less digits than its factorization.

1326531711243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247997993.

The product of its digits is 90720, while the sum is 39.

The spelling of 1326531711243 in words is "one trillion, three hundred twenty-six billion, five hundred thirty-one million, seven hundred eleven thousand, two hundred forty-three".