1311200323321 has 8 divisors (see below), whose sum is σ = 1499682642624. Its totient is φ = 1123010000880.

The previous prime is 1311200323297. The next prime is 1311200323339. The reversal of 1311200323321 is 1233230021131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311200323321 - 2¹⁷ = 1311200192249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311200323292 and 1311200323301.

It is not an unprimeable number, because it can be changed into a prime (1311200323351) 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 7 ways as a sum of consecutive naturals, for example, 72989590 + ... + 73007551.

It is an arithmetic number, because the mean of its divisors is an integer number (187460330328).

Almost surely, 2^{1311200323321} is an apocalyptic number.

It is an amenable number.

1311200323321 is a deficient number, since it is larger than the sum of its proper divisors (188482319303).

1311200323321 is a wasteful number, since it uses less digits than its factorization.

1311200323321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145998431.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1311200323321 its reverse (1233230021131), we get a palindrome (2544430344452).

The spelling of 1311200323321 in words is "one trillion, three hundred eleven billion, two hundred million, three hundred twenty-three thousand, three hundred twenty-one".