11323012123 has 4 divisors (see below), whose sum is σ = 11323542640. Its totient is φ = 11322481608.

The previous prime is 11323012121. The next prime is 11323012147. The reversal of 11323012123 is 32121032311.

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 11323012123 - 2¹ = 11323012121 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 11323012123.

It is not an unprimeable number, because it can be changed into a prime (11323012121) 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, 231840 + ... + 276397.

It is an arithmetic number, because the mean of its divisors is an integer number (2830885660).

Almost surely, 2^11323012123 is an apocalyptic number.

11323012123 is a deficient number, since it is larger than the sum of its proper divisors (530517).

11323012123 is an equidigital number, since it uses as much as digits as its factorization.

11323012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530516.

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

Adding to 11323012123 its reverse (32121032311), we get a palindrome (43444044434).

The spelling of 11323012123 in words is "eleven billion, three hundred twenty-three million, twelve thousand, one hundred twenty-three".