11313121323 has 32 divisors (see below), whose sum is σ = 17965209600. Its totient is φ = 6327068160.

The previous prime is 11313121301. The next prime is 11313121331. The reversal of 11313121323 is 32312131311.

It is a happy number.

It is not a de Polignac number, because 11313121323 - 2¹⁷ = 11312990251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 11313121323.

It is not an unprimeable number, because it can be changed into a prime (11313121423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68598 + ... + 165323.

It is an arithmetic number, because the mean of its divisors is an integer number (561412800).

Almost surely, 2^11313121323 is an apocalyptic number.

11313121323 is a deficient number, since it is larger than the sum of its proper divisors (6652088277).

11313121323 is an equidigital number, since it uses as much as digits as its factorization.

11313121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233992 (or 233978 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

Adding to 11313121323 its reverse (32312131311), we get a palindrome (43625252634).

The spelling of 11313121323 in words is "eleven billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred twenty-three".