1320043311213 has 48 divisors (see below), whose sum is σ = 2009222147520. Its totient is φ = 769657109760.

The previous prime is 1320043311203. The next prime is 1320043311233. The reversal of 1320043311213 is 3121133400231.

It is not a de Polignac number, because 1320043311213 - 2²⁴ = 1320026533997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320043311203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 643206 + ... + 1747512.

It is an arithmetic number, because the mean of its divisors is an integer number (41858794740).

Almost surely, 2^{1320043311213} is an apocalyptic number.

It is an amenable number.

1320043311213 is a deficient number, since it is larger than the sum of its proper divisors (689178836307).

1320043311213 is a wasteful number, since it uses less digits than its factorization.

1320043311213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104458 (or 1104447 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1320043311213 its reverse (3121133400231), we get a palindrome (4441176711444).

The spelling of 1320043311213 in words is "one trillion, three hundred twenty billion, forty-three million, three hundred eleven thousand, two hundred thirteen".