13321002231 has 16 divisors (see below), whose sum is σ = 19738007520. Its totient is φ = 8879232960.

The previous prime is 13321002221. The next prime is 13321002263. The reversal of 13321002231 is 13220012331.

13321002231 is a `hidden beast` number, since 1 + 332 + 100 + 2 + 231 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-13321002231 is a prime.

It is a super-2 number, since 2×13321002231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321002221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146061 + ... + 219033.

It is an arithmetic number, because the mean of its divisors is an integer number (1233625470).

Almost surely, 2^13321002231 is an apocalyptic number.

13321002231 is a deficient number, since it is larger than the sum of its proper divisors (6417005289).

13321002231 is an equidigital number, since it uses as much as digits as its factorization.

13321002231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79743 (or 79737 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13321002231 its reverse (13220012331), we get a palindrome (26541014562).

It can be divided in two parts, 1332100 and 2231, that added together give a palindrome (1334331).

The spelling of 13321002231 in words is "thirteen billion, three hundred twenty-one million, two thousand, two hundred thirty-one".