1320434323013 has 4 divisors (see below), whose sum is σ = 1422006194028. Its totient is φ = 1218862452000.

The previous prime is 1320434322997. The next prime is 1320434323049. The reversal of 1320434323013 is 3103234340231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 340457079169 + 979977243844 = 583487^2 + 989938^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320434323013 - 2⁴ = 1320434322997 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 (1320434320013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50785935488 + ... + 50785935513.

It is an arithmetic number, because the mean of its divisors is an integer number (355501548507).

Almost surely, 2^{1320434323013} is an apocalyptic number.

1320434323013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1320434323013 is a deficient number, since it is larger than the sum of its proper divisors (101571871015).

1320434323013 is a wasteful number, since it uses less digits than its factorization.

1320434323013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101571871014.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 1320434323013 its reverse (3103234340231), we get a palindrome (4423668663244).

The spelling of 1320434323013 in words is "one trillion, three hundred twenty billion, four hundred thirty-four million, three hundred twenty-three thousand, thirteen".