1320243121303 has 8 divisors (see below), whose sum is σ = 1323442940400. Its totient is φ = 1317043535808.

The previous prime is 1320243121291. The next prime is 1320243121339. The reversal of 1320243121303 is 3031213420231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320243121303 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 (1320243421303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17918643 + ... + 17992171.

It is an arithmetic number, because the mean of its divisors is an integer number (165430367550).

Almost surely, 2^{1320243121303} is an apocalyptic number.

1320243121303 is a deficient number, since it is larger than the sum of its proper divisors (3199819097).

1320243121303 is an equidigital number, since it uses as much as digits as its factorization.

1320243121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116801.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1320243121303 its reverse (3031213420231), we get a palindrome (4351456541534).

The spelling of 1320243121303 in words is "one trillion, three hundred twenty billion, two hundred forty-three million, one hundred twenty-one thousand, three hundred three".