13320311212031 has 4 divisors (see below), whose sum is σ = 13320323445000. Its totient is φ = 13320298979064.

The previous prime is 13320311211971. The next prime is 13320311212063. The reversal of 13320311212031 is 13021211302331.

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 13320311212031 - 2²⁶ = 13320244103167 is a prime.

It is a super-2 number, since 2×13320311212031² (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 = 13320311211988 and 13320311212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320311212081) 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, 4304156 + ... + 6720593.

It is an arithmetic number, because the mean of its divisors is an integer number (3330080861250).

Almost surely, 2^{13320311212031} is an apocalyptic number.

13320311212031 is a deficient number, since it is larger than the sum of its proper divisors (12232969).

13320311212031 is a wasteful number, since it uses less digits than its factorization.

13320311212031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12232968.

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

Adding to 13320311212031 its reverse (13021211302331), we get a palindrome (26341522514362).

The spelling of 13320311212031 in words is "thirteen trillion, three hundred twenty billion, three hundred eleven million, two hundred twelve thousand, thirty-one".