12331301331 has 4 divisors (see below), whose sum is σ = 16441735112. Its totient is φ = 8220867552.

The previous prime is 12331301299. The next prime is 12331301357. The reversal of 12331301331 is 13310313321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13310313321 = 3 ⋅4436771107.

It is not a de Polignac number, because 12331301331 - 2⁵ = 12331301299 is a prime.

It is a super-2 number, since 2×12331301331² (a number of 21 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 = 12331301298 and 12331301307.

It is not an unprimeable number, because it can be changed into a prime (12331305331) 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, 2055216886 + ... + 2055216891.

It is an arithmetic number, because the mean of its divisors is an integer number (4110433778).

Almost surely, 2^12331301331 is an apocalyptic number.

12331301331 is a deficient number, since it is larger than the sum of its proper divisors (4110433781).

12331301331 is an equidigital number, since it uses as much as digits as its factorization.

12331301331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110433780.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 12331301331 its reverse (13310313321), we get a palindrome (25641614652).

The spelling of 12331301331 in words is "twelve billion, three hundred thirty-one million, three hundred one thousand, three hundred thirty-one".