13312231331 has 4 divisors (see below), whose sum is σ = 15213978672. Its totient is φ = 11410483992.

The previous prime is 13312231321. The next prime is 13312231343. The reversal of 13312231331 is 13313221331.

13312231331 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 13312231331 - 2⁶ = 13312231267 is a prime.

It is a super-2 number, since 2×13312231331² (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 = 13312231297 and 13312231306.

It is not an unprimeable number, because it can be changed into a prime (13312231321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950873660 + ... + 950873673.

It is an arithmetic number, because the mean of its divisors is an integer number (3803494668).

Almost surely, 2^13312231331 is an apocalyptic number.

13312231331 is a deficient number, since it is larger than the sum of its proper divisors (1901747341).

13312231331 is an equidigital number, since it uses as much as digits as its factorization.

13312231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901747340.

The product of its digits is 972, while the sum is 23.

Adding to 13312231331 its reverse (13313221331), we get a palindrome (26625452662).

The spelling of 13312231331 in words is "thirteen billion, three hundred twelve million, two hundred thirty-one thousand, three hundred thirty-one".