11321320123 has 8 divisors (see below), whose sum is σ = 11495683296. Its totient is φ = 11147371200.

The previous prime is 11321320117. The next prime is 11321320147. The reversal of 11321320123 is 32102312311.

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

It is a cyclic number.

It is not a de Polignac number, because 11321320123 - 2¹⁷ = 11321189051 is a prime.

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 11321320123.

It is not an unprimeable number, because it can be changed into a prime (11321320223) 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, 48258 + ... + 158023.

It is an arithmetic number, because the mean of its divisors is an integer number (1436960412).

Almost surely, 2^11321320123 is an apocalyptic number.

11321320123 is a deficient number, since it is larger than the sum of its proper divisors (174363173).

11321320123 is an equidigital number, since it uses as much as digits as its factorization.

11321320123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207125.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11321320123 its reverse (32102312311), we get a palindrome (43423632434).

The spelling of 11321320123 in words is "eleven billion, three hundred twenty-one million, three hundred twenty thousand, one hundred twenty-three".