13306231 has 4 divisors (see below), whose sum is σ = 13335192. Its totient is φ = 13277272.

The previous prime is 13306229. The next prime is 13306243. The reversal of 13306231 is 13260331.

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

It is a cyclic number.

It is not a de Polignac number, because 13306231 - 2¹ = 13306229 is a prime.

It is a super-2 number, since 2×13306231² = 354111566850722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13306199 and 13306208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13306031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13780 + ... + 14713.

It is an arithmetic number, because the mean of its divisors is an integer number (3333798).

Almost surely, 2^13306231 is an apocalyptic number.

13306231 is a deficient number, since it is larger than the sum of its proper divisors (28961).

13306231 is an equidigital number, since it uses as much as digits as its factorization.

13306231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28960.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 13306231 is about 3647.7706890648. The cubic root of 13306231 is about 236.9654444685.

Adding to 13306231 its reverse (13260331), we get a palindrome (26566562).

The spelling of 13306231 in words is "thirteen million, three hundred six thousand, two hundred thirty-one".