13231002321 has 8 divisors (see below), whose sum is σ = 19601484960. Its totient is φ = 8820668196.

The previous prime is 13231002269. The next prime is 13231002341. The reversal of 13231002321 is 12320013231.

13231002321 is a `hidden beast` number, since 1 + 32 + 310 + 0 + 2 + 321 = 666.

It is not a de Polignac number, because 13231002321 - 2¹⁵ = 13230969553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13231002294 and 13231002303.

It is not an unprimeable number, because it can be changed into a prime (13231002341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245018535 + ... + 245018588.

It is an arithmetic number, because the mean of its divisors is an integer number (2450185620).

Almost surely, 2^13231002321 is an apocalyptic number.

It is an amenable number.

13231002321 is a deficient number, since it is larger than the sum of its proper divisors (6370482639).

13231002321 is an equidigital number, since it uses as much as digits as its factorization.

13231002321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490037132 (or 490037126 counting only the distinct ones).

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

Adding to 13231002321 its reverse (12320013231), we get a palindrome (25551015552).

The spelling of 13231002321 in words is "thirteen billion, two hundred thirty-one million, two thousand, three hundred twenty-one".