12311031133123 has 16 divisors (see below), whose sum is σ = 12530737830240. Its totient is φ = 12093158727936.

The previous prime is 12311031133103. The next prime is 12311031133241. The reversal of 12311031133123 is 32133113011321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311031133123 is a prime.

It is a super-2 number, since 2×12311031133123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311031133103) 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, 87638340 + ... + 87778702.

It is an arithmetic number, because the mean of its divisors is an integer number (783171114390).

Almost surely, 2^{12311031133123} is an apocalyptic number.

12311031133123 is a deficient number, since it is larger than the sum of its proper divisors (219706697117).

12311031133123 is a wasteful number, since it uses less digits than its factorization.

12311031133123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146886.

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

Adding to 12311031133123 its reverse (32133113011321), we get a palindrome (44444144144444).

The spelling of 12311031133123 in words is "twelve trillion, three hundred eleven billion, thirty-one million, one hundred thirty-three thousand, one hundred twenty-three".