11331131320123 has 4 divisors (see below), whose sum is σ = 11331186077608. Its totient is φ = 11331076562640.

The previous prime is 11331131320037. The next prime is 11331131320139. The reversal of 11331131320123 is 32102313113311.

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 11331131320123 - 2⁹ = 11331131319611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331131320193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27067161 + ... + 27482602.

It is an arithmetic number, because the mean of its divisors is an integer number (2832796519402).

Almost surely, 2^{11331131320123} is an apocalyptic number.

11331131320123 is a deficient number, since it is larger than the sum of its proper divisors (54757485).

11331131320123 is an equidigital number, since it uses as much as digits as its factorization.

11331131320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54757484.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 11331131320123 its reverse (32102313113311), we get a palindrome (43433444433434).

The spelling of 11331131320123 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred twenty thousand, one hundred twenty-three".