13320331 has 8 divisors (see below), whose sum is σ = 13716864. Its totient is φ = 12929280.

The previous prime is 13320313. The next prime is 13320343. The reversal of 13320331 is 13302331.

13320331 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13320331 - 2¹⁷ = 13189259 is a prime.

It is a super-2 number, since 2×13320331² = 354862435899122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13320301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3846 + ... + 6436.

It is an arithmetic number, because the mean of its divisors is an integer number (1714608).

Almost surely, 2^13320331 is an apocalyptic number.

13320331 is a deficient number, since it is larger than the sum of its proper divisors (396533).

13320331 is an equidigital number, since it uses as much as digits as its factorization.

13320331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 13320331 is about 3649.7028646179. The cubic root of 13320331 is about 237.0491153763.

Adding to 13320331 its reverse (13302331), we get a palindrome (26622662).

The spelling of 13320331 in words is "thirteen million, three hundred twenty thousand, three hundred thirty-one".