13103032321 has 4 divisors (see below), whose sum is σ = 13287582144. Its totient is φ = 12918482500.

The previous prime is 13103032253. The next prime is 13103032331. The reversal of 13103032321 is 12323030131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13103032321 - 2¹⁹ = 13102508033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13103032331) 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, 92274805 + ... + 92274946.

It is an arithmetic number, because the mean of its divisors is an integer number (3321895536).

Almost surely, 2^13103032321 is an apocalyptic number.

It is an amenable number.

13103032321 is a deficient number, since it is larger than the sum of its proper divisors (184549823).

13103032321 is an equidigital number, since it uses as much as digits as its factorization.

13103032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184549822.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13103032321 its reverse (12323030131), we get a palindrome (25426062452).

The spelling of 13103032321 in words is "thirteen billion, one hundred three million, thirty-two thousand, three hundred twenty-one".