1320320366123 has 32 divisors (see below), whose sum is σ = 1504429355520. Its totient is φ = 1157283204000.

The previous prime is 1320320366117. The next prime is 1320320366171. The reversal of 1320320366123 is 3216630230231.

It is not a de Polignac number, because 1320320366123 - 2¹⁶ = 1320320300587 is a prime.

It is a super-2 number, since 2×1320320366123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320320366123.

It is not an unprimeable number, because it can be changed into a prime (1320320366423) 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 31 ways as a sum of consecutive naturals, for example, 28037948 + ... + 28084998.

It is an arithmetic number, because the mean of its divisors is an integer number (47013417360).

Almost surely, 2^{1320320366123} is an apocalyptic number.

1320320366123 is a deficient number, since it is larger than the sum of its proper divisors (184108989397).

1320320366123 is an equidigital number, since it uses as much as digits as its factorization.

1320320366123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47840 (or 47818 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 1320320366123 its reverse (3216630230231), we get a palindrome (4536950596354).

The spelling of 1320320366123 in words is "one trillion, three hundred twenty billion, three hundred twenty million, three hundred sixty-six thousand, one hundred twenty-three".