12321331201031 has 4 divisors (see below), whose sum is σ = 12351456705600. Its totient is φ = 12291205696464.

The previous prime is 12321331201007. The next prime is 12321331201043. The reversal of 12321331201031 is 13010213312321.

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 12321331201031 - 2²² = 12321327006727 is a prime.

It is a super-2 number, since 2×12321331201031² (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 = 12321331200988 and 12321331201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321330201031) 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, 15062751671 + ... + 15062752488.

It is an arithmetic number, because the mean of its divisors is an integer number (3087864176400).

Almost surely, 2^{12321331201031} is an apocalyptic number.

12321331201031 is a deficient number, since it is larger than the sum of its proper divisors (30125504569).

12321331201031 is an equidigital number, since it uses as much as digits as its factorization.

12321331201031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30125504568.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12321331201031 its reverse (13010213312321), we get a palindrome (25331544513352).

The spelling of 12321331201031 in words is "twelve trillion, three hundred twenty-one billion, three hundred thirty-one million, two hundred one thousand, thirty-one".