13010321 has 4 divisors (see below), whose sum is σ = 13775652. Its totient is φ = 12244992.

The previous prime is 13010317. The next prime is 13010339. The reversal of 13010321 is 12301031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12301031 = 131 ⋅93901.

It can be written as a sum of positive squares in 2 ways, for example, as 6558721 + 6451600 = 2561^2 + 2540^2 .

It is a cyclic number.

It is not a de Polignac number, because 13010321 - 2² = 13010317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13310321) 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, 382640 + ... + 382673.

It is an arithmetic number, because the mean of its divisors is an integer number (3443913).

Almost surely, 2^13010321 is an apocalyptic number.

It is an amenable number.

13010321 is a deficient number, since it is larger than the sum of its proper divisors (765331).

13010321 is an equidigital number, since it uses as much as digits as its factorization.

13010321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765330.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13010321 is about 3606.9822566794. The cubic root of 13010321 is about 235.1956782741.

Adding to 13010321 its reverse (12301031), we get a palindrome (25311352).

It can be divided in two parts, 13010 and 321, that added together give a palindrome (13331).

The spelling of 13010321 in words is "thirteen million, ten thousand, three hundred twenty-one".