13331320 has 16 divisors (see below), whose sum is σ = 29995560. Its totient is φ = 5332512.

The previous prime is 13331309. The next prime is 13331411. The reversal of 13331320 is 2313331.

It is a junction number, because it is equal to n+sod(n) for n = 13331294 and 13331303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166602 + ... + 166681.

Almost surely, 2^13331320 is an apocalyptic number.

13331320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13331320 is an abundant number, since it is smaller than the sum of its proper divisors (16664240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13331320 is a wasteful number, since it uses less digits than its factorization.

13331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333294 (or 333290 counting only the distinct ones).

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

The square root of 13331320 is about 3651.2080192725. The cubic root of 13331320 is about 237.1142843455.

Adding to 13331320 its reverse (2313331), we get a palindrome (15644651).

The spelling of 13331320 in words is "thirteen million, three hundred thirty-one thousand, three hundred twenty".