11131312323 has 16 divisors (see below), whose sum is σ = 15905615616. Its totient is φ = 6906382560.

The previous prime is 11131312271. The next prime is 11131312331. The reversal of 11131312323 is 32321313111.

It is a happy number.

It is not a de Polignac number, because 11131312323 - 2⁸ = 11131312067 is a prime.

It is a super-2 number, since 2×11131312323² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11131312323.

It is not an unprimeable number, because it can be changed into a prime (11131312123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2177493 + ... + 2182598.

It is an arithmetic number, because the mean of its divisors is an integer number (994100976).

Almost surely, 2^11131312323 is an apocalyptic number.

11131312323 is a deficient number, since it is larger than the sum of its proper divisors (4774303293).

11131312323 is a wasteful number, since it uses less digits than its factorization.

11131312323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360154.

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

Adding to 11131312323 its reverse (32321313111), we get a palindrome (43452625434).

The spelling of 11131312323 in words is "eleven billion, one hundred thirty-one million, three hundred twelve thousand, three hundred twenty-three".