12311123 has 16 divisors (see below), whose sum is σ = 14069760. Its totient is φ = 10670400.

The previous prime is 12311119. The next prime is 12311137. The reversal of 12311123 is 32111321.

It is a cyclic number.

It is not a de Polignac number, because 12311123 - 2² = 12311119 is a prime.

It is a super-2 number, since 2×12311123² = 303127499042258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12311098 and 12311107.

It is not an unprimeable number, because it can be changed into a prime (12311113) 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, 26711 + ... + 27167.

It is an arithmetic number, because the mean of its divisors is an integer number (879360).

Almost surely, 2^12311123 is an apocalyptic number.

12311123 is a deficient number, since it is larger than the sum of its proper divisors (1758637).

12311123 is a wasteful number, since it uses less digits than its factorization.

12311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its digits is 36, while the sum is 14.

The square root of 12311123 is about 3508.7209920425. The cubic root of 12311123 is about 230.9045850702.

Adding to 12311123 its reverse (32111321), we get a palindrome (44422444).

The spelling of 12311123 in words is "twelve million, three hundred eleven thousand, one hundred twenty-three".