13321012231 has 4 divisors (see below), whose sum is σ = 13458342352. Its totient is φ = 13183682112.

The previous prime is 13321012219. The next prime is 13321012241. The reversal of 13321012231 is 13221012331.

13321012231 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 13321012231 - 2⁹ = 13321011719 is a prime.

It is a super-2 number, since 2×13321012231² (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 = 13321012199 and 13321012208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321012241) 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, 68664915 + ... + 68665108.

It is an arithmetic number, because the mean of its divisors is an integer number (3364585588).

Almost surely, 2^13321012231 is an apocalyptic number.

13321012231 is a deficient number, since it is larger than the sum of its proper divisors (137330121).

13321012231 is an equidigital number, since it uses as much as digits as its factorization.

13321012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137330120.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13321012231 its reverse (13221012331), we get a palindrome (26542024562).

The spelling of 13321012231 in words is "thirteen billion, three hundred twenty-one million, twelve thousand, two hundred thirty-one".