11331320023 has 4 divisors (see below), whose sum is σ = 11545118568. Its totient is φ = 11117521480.

The previous prime is 11331319999. The next prime is 11331320069. The reversal of 11331320023 is 32002313311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32002313311 = 17573 ⋅1821107.

It is a cyclic number.

It is not a de Polignac number, because 11331320023 - 2⁵ = 11331319991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331320083) 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, 106899193 + ... + 106899298.

It is an arithmetic number, because the mean of its divisors is an integer number (2886279642).

Almost surely, 2^11331320023 is an apocalyptic number.

11331320023 is a deficient number, since it is larger than the sum of its proper divisors (213798545).

11331320023 is an equidigital number, since it uses as much as digits as its factorization.

11331320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213798544.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 11331320023 its reverse (32002313311), we get a palindrome (43333633334).

The spelling of 11331320023 in words is "eleven billion, three hundred thirty-one million, three hundred twenty thousand, twenty-three".