13313331 has 12 divisors (see below), whose sum is σ = 19269952. Its totient is φ = 8857296.

The previous prime is 13313327. The next prime is 13313341. The reversal of 13313331 is 13331331.

13313331 is a `hidden beast` number, since 1 + 331 + 3 + 331 = 666.

13313331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13313331 - 2² = 13313327 is a prime.

It is a super-2 number, since 2×13313331² = 354489564631122, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13313341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4245 + ... + 6681.

Almost surely, 2^13313331 is an apocalyptic number.

13313331 is a deficient number, since it is larger than the sum of its proper divisors (5956621).

13313331 is a wasteful number, since it uses less digits than its factorization.

13313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050 (or 3047 counting only the distinct ones).

The product of its digits is 243, while the sum is 18.

The square root of 13313331 is about 3648.7437564181. The cubic root of 13313331 is about 237.0075840120.

Adding to 13313331 its reverse (13331331), we get a palindrome (26644662).

The spelling of 13313331 in words is "thirteen million, three hundred thirteen thousand, three hundred thirty-one".