13321137 has 4 divisors (see below), whose sum is σ = 17761520. Its totient is φ = 8880756.

The previous prime is 13321129. The next prime is 13321151. The reversal of 13321137 is 73112331.

13321137 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.

It is not a de Polignac number, because 13321137 - 2³ = 13321129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321127) 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, 2220187 + ... + 2220192.

It is an arithmetic number, because the mean of its divisors is an integer number (4440380).

Almost surely, 2^13321137 is an apocalyptic number.

It is an amenable number.

13321137 is a deficient number, since it is larger than the sum of its proper divisors (4440383).

13321137 is an equidigital number, since it uses as much as digits as its factorization.

13321137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440382.

The product of its digits is 378, while the sum is 21.

The square root of 13321137 is about 3649.8132828954. The cubic root of 13321137 is about 237.0538964821.

Adding to 13321137 its reverse (73112331), we get a palindrome (86433468).

The spelling of 13321137 in words is "thirteen million, three hundred twenty-one thousand, one hundred thirty-seven".