1320331223311 has 4 divisors (see below), whose sum is σ = 1320341751232. Its totient is φ = 1320320695392.

The previous prime is 1320331223249. The next prime is 1320331223327. The reversal of 1320331223311 is 1133221330231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320331223311 - 2¹⁵ = 1320331190543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320331223011) 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 in 3 ways as a sum of consecutive naturals, for example, 5073546 + ... + 5327431.

It is an arithmetic number, because the mean of its divisors is an integer number (330085437808).

Almost surely, 2^{1320331223311} is an apocalyptic number.

1320331223311 is a deficient number, since it is larger than the sum of its proper divisors (10527921).

1320331223311 is a wasteful number, since it uses less digits than its factorization.

1320331223311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10527920.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1320331223311 its reverse (1133221330231), we get a palindrome (2453552553542).

The spelling of 1320331223311 in words is "one trillion, three hundred twenty billion, three hundred thirty-one million, two hundred twenty-three thousand, three hundred eleven".