12013132333231 has 4 divisors (see below), whose sum is σ = 12013260078600. Its totient is φ = 12013004587864.

The previous prime is 12013132333229. The next prime is 12013132333259. The reversal of 12013132333231 is 13233323131021.

It is a happy number.

12013132333231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12013132333231 - 2¹ = 12013132333229 is a prime.

It is a super-3 number, since 3×12013132333231³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12013132333231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013132333331) 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, 63731521 + ... + 63919738.

It is an arithmetic number, because the mean of its divisors is an integer number (3003315019650).

Almost surely, 2^{12013132333231} is an apocalyptic number.

12013132333231 is a deficient number, since it is larger than the sum of its proper divisors (127745369).

12013132333231 is an equidigital number, since it uses as much as digits as its factorization.

12013132333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127745368.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 12013132333231 its reverse (13233323131021), we get a palindrome (25246455464252).

The spelling of 12013132333231 in words is "twelve trillion, thirteen billion, one hundred thirty-two million, three hundred thirty-three thousand, two hundred thirty-one".