13304381 has 4 divisors (see below), whose sum is σ = 13355232. Its totient is φ = 13253532.

The previous prime is 13304303. The next prime is 13304383. The reversal of 13304381 is 18340331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13304381 - 2¹⁰ = 13303357 is a prime.

It is a super-2 number, since 2×13304381² = 354013107586322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13304383) 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, 25031 + ... + 25556.

It is an arithmetic number, because the mean of its divisors is an integer number (3338808).

Almost surely, 2^13304381 is an apocalyptic number.

It is an amenable number.

13304381 is a deficient number, since it is larger than the sum of its proper divisors (50851).

13304381 is an equidigital number, since it uses as much as digits as its factorization.

13304381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50850.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13304381 is about 3647.5171007139. The cubic root of 13304381 is about 236.9544619849.

The spelling of 13304381 in words is "thirteen million, three hundred four thousand, three hundred eighty-one".