12311121331131 has 32 divisors (see below), whose sum is σ = 19188043153920. Its totient is φ = 6875715224064.

The previous prime is 12311121331129. The next prime is 12311121331147. The reversal of 12311121331131 is 13113312111321.

It is not a de Polignac number, because 12311121331131 - 2¹ = 12311121331129 is a prime.

It is a super-2 number, since 2×12311121331131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12311121331031) 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, 28503390 + ... + 28932083.

It is an arithmetic number, because the mean of its divisors is an integer number (599626348560).

Almost surely, 2^{12311121331131} is an apocalyptic number.

12311121331131 is a deficient number, since it is larger than the sum of its proper divisors (6876921822789).

12311121331131 is a wasteful number, since it uses less digits than its factorization.

12311121331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57435715.

The product of its digits is 324, while the sum is 24.

Adding to 12311121331131 its reverse (13113312111321), we get a palindrome (25424433442452).

The spelling of 12311121331131 in words is "twelve trillion, three hundred eleven billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred thirty-one".