1320313012343 has 4 divisors (see below), whose sum is σ = 1421875551768. Its totient is φ = 1218750472920.

The previous prime is 1320313012327. The next prime is 1320313012351. The reversal of 1320313012343 is 3432103130231.

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 1320313012343 - 2⁴ = 1320313012327 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 (1320313012043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50781269693 + ... + 50781269718.

It is an arithmetic number, because the mean of its divisors is an integer number (355468887942).

Almost surely, 2^{1320313012343} is an apocalyptic number.

1320313012343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1320313012343 is a deficient number, since it is larger than the sum of its proper divisors (101562539425).

1320313012343 is a wasteful number, since it uses less digits than its factorization.

1320313012343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101562539424.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1320313012343 its reverse (3432103130231), we get a palindrome (4752416142574).

The spelling of 1320313012343 in words is "one trillion, three hundred twenty billion, three hundred thirteen million, twelve thousand, three hundred forty-three".