13312621 has 4 divisors (see below), whose sum is σ = 15214432. Its totient is φ = 11410812.

The previous prime is 13312591. The next prime is 13312633. The reversal of 13312621 is 12621331.

13312621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12621331 = 409 ⋅30859.

It is not a de Polignac number, because 13312621 - 2⁵ = 13312589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312681) 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, 950895 + ... + 950908.

It is an arithmetic number, because the mean of its divisors is an integer number (3803608).

Almost surely, 2^13312621 is an apocalyptic number.

It is an amenable number.

13312621 is a deficient number, since it is larger than the sum of its proper divisors (1901811).

13312621 is an equidigital number, since it uses as much as digits as its factorization.

13312621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901810.

The product of its digits is 216, while the sum is 19.

The square root of 13312621 is about 3648.6464613607. The cubic root of 13312621 is about 237.0033707319.

Adding to 13312621 its reverse (12621331), we get a palindrome (25933952).

The spelling of 13312621 in words is "thirteen million, three hundred twelve thousand, six hundred twenty-one".