13347381 has 4 divisors (see below), whose sum is σ = 17796512. Its totient is φ = 8898252.

The previous prime is 13347379. The next prime is 13347401. The reversal of 13347381 is 18374331.

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 not a de Polignac number, because 13347381 - 2¹ = 13347379 is a prime.

It is a super-2 number, since 2×13347381² = 356305159118322, 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 (13347311) 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, 2224561 + ... + 2224566.

It is an arithmetic number, because the mean of its divisors is an integer number (4449128).

Almost surely, 2^13347381 is an apocalyptic number.

It is an amenable number.

13347381 is a deficient number, since it is larger than the sum of its proper divisors (4449131).

13347381 is an equidigital number, since it uses as much as digits as its factorization.

13347381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449130.

The product of its digits is 6048, while the sum is 30.

The square root of 13347381 is about 3653.4067662936. The cubic root of 13347381 is about 237.2094678229.

The spelling of 13347381 in words is "thirteen million, three hundred forty-seven thousand, three hundred eighty-one".