11123031232321 has 4 divisors (see below), whose sum is σ = 11123047586500. Its totient is φ = 11123014878144.

The previous prime is 11123031232289. The next prime is 11123031232337. The reversal of 11123031232321 is 12323213032111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9891905619600 + 1231125612721 = 3145140^2 + 1109561^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123031232321 - 2⁵ = 11123031232289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11123031235321) 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, 7110516 + ... + 8532613.

It is an arithmetic number, because the mean of its divisors is an integer number (2780761896625).

Almost surely, 2^{11123031232321} is an apocalyptic number.

It is an amenable number.

11123031232321 is a deficient number, since it is larger than the sum of its proper divisors (16354179).

11123031232321 is an equidigital number, since it uses as much as digits as its factorization.

11123031232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16354178.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 11123031232321 its reverse (12323213032111), we get a palindrome (23446244264432).

The spelling of 11123031232321 in words is "eleven trillion, one hundred twenty-three billion, thirty-one million, two hundred thirty-two thousand, three hundred twenty-one".