13305233 has 4 divisors (see below), whose sum is σ = 13454820. Its totient is φ = 13155648.

The previous prime is 13305223. The next prime is 13305239. The reversal of 13305233 is 33250331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2362369 + 10942864 = 1537^2 + 3308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13305233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13305239) 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, 74660 + ... + 74837.

It is an arithmetic number, because the mean of its divisors is an integer number (3363705).

Almost surely, 2^13305233 is an apocalyptic number.

It is an amenable number.

13305233 is a deficient number, since it is larger than the sum of its proper divisors (149587).

13305233 is an equidigital number, since it uses as much as digits as its factorization.

13305233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149586.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 13305233 is about 3647.6338906201. The cubic root of 13305233 is about 236.9595199903.

Adding to 13305233 its reverse (33250331), we get a palindrome (46555564).

The spelling of 13305233 in words is "thirteen million, three hundred five thousand, two hundred thirty-three".