13305131 has 4 divisors (see below), whose sum is σ = 15205872. Its totient is φ = 11404392.

The previous prime is 13305119. The next prime is 13305133. The reversal of 13305131 is 13150331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13150331 = 3467 ⋅3793.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13305131 is a prime.

It is a super-2 number, since 2×13305131² = 354053021854322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (13305133) 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, 950360 + ... + 950373.

It is an arithmetic number, because the mean of its divisors is an integer number (3801468).

Almost surely, 2^13305131 is an apocalyptic number.

13305131 is a deficient number, since it is larger than the sum of its proper divisors (1900741).

13305131 is an equidigital number, since it uses as much as digits as its factorization.

13305131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900740.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 13305131 is about 3647.6199089269. The cubic root of 13305131 is about 236.9589144658.

Adding to 13305131 its reverse (13150331), we get a palindrome (26455462).

The spelling of 13305131 in words is "thirteen million, three hundred five thousand, one hundred thirty-one".