12311131320331 has 4 divisors (see below), whose sum is σ = 12311140430592. Its totient is φ = 12311122210072.

The previous prime is 12311131320329. The next prime is 12311131320347. The reversal of 12311131320331 is 13302313111321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12311131320331 - 2¹ = 12311131320329 is a prime.

It is a super-2 number, since 2×12311131320331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12311131320296 and 12311131320305.

It is not an unprimeable number, because it can be changed into a prime (12311131320031) 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, 2079691 + ... + 5380276.

It is an arithmetic number, because the mean of its divisors is an integer number (3077785107648).

Almost surely, 2^{12311131320331} is an apocalyptic number.

12311131320331 is a deficient number, since it is larger than the sum of its proper divisors (9110261).

12311131320331 is an equidigital number, since it uses as much as digits as its factorization.

12311131320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110260.

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

Adding to 12311131320331 its reverse (13302313111321), we get a palindrome (25613444431652).

The spelling of 12311131320331 in words is "twelve trillion, three hundred eleven billion, one hundred thirty-one million, three hundred twenty thousand, three hundred thirty-one".