11320343123 has 4 divisors (see below), whose sum is σ = 11406758088. Its totient is φ = 11233928160.

The previous prime is 11320343117. The next prime is 11320343137. The reversal of 11320343123 is 32134302311.

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 11320343123 - 2⁶ = 11320343059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11320343143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43207286 + ... + 43207547.

It is an arithmetic number, because the mean of its divisors is an integer number (2851689522).

Almost surely, 2^11320343123 is an apocalyptic number.

11320343123 is a deficient number, since it is larger than the sum of its proper divisors (86414965).

11320343123 is an equidigital number, since it uses as much as digits as its factorization.

11320343123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86414964.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 11320343123 its reverse (32134302311), we get a palindrome (43454645434).

The spelling of 11320343123 in words is "eleven billion, three hundred twenty million, three hundred forty-three thousand, one hundred twenty-three".