13305031 has 4 divisors (see below), whose sum is σ = 13530600. Its totient is φ = 13079464.

The previous prime is 13305013. The next prime is 13305041. The reversal of 13305031 is 13050331.

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 13305031 - 2⁹ = 13304519 is a prime.

It is a super-2 number, since 2×13305031² = 354047699821922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 13304996 and 13305014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13305001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112696 + ... + 112813.

It is an arithmetic number, because the mean of its divisors is an integer number (3382650).

Almost surely, 2^13305031 is an apocalyptic number.

13305031 is a deficient number, since it is larger than the sum of its proper divisors (225569).

13305031 is an equidigital number, since it uses as much as digits as its factorization.

13305031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225568.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 13305031 is about 3647.6062013326. The cubic root of 13305031 is about 236.9583208113.

Adding to 13305031 its reverse (13050331), we get a palindrome (26355362).

The spelling of 13305031 in words is "thirteen million, three hundred five thousand, thirty-one".