13030012321 has 4 divisors (see below), whose sum is σ = 13796483652. Its totient is φ = 12263540992.

The previous prime is 13030012297. The next prime is 13030012327. The reversal of 13030012321 is 12321003031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11543138721 + 1486873600 = 107439^2 + 38560^2 .

It is a cyclic number.

It is not a de Polignac number, because 13030012321 - 2¹⁵ = 13029979553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13030012295 and 13030012304.

It is not an unprimeable number, because it can be changed into a prime (13030012327) 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, 383235640 + ... + 383235673.

It is an arithmetic number, because the mean of its divisors is an integer number (3449120913).

Almost surely, 2^13030012321 is an apocalyptic number.

It is an amenable number.

13030012321 is a deficient number, since it is larger than the sum of its proper divisors (766471331).

13030012321 is an equidigital number, since it uses as much as digits as its factorization.

13030012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766471330.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13030012321 its reverse (12321003031), we get a palindrome (25351015352).

The spelling of 13030012321 in words is "thirteen billion, thirty million, twelve thousand, three hundred twenty-one".