13356381 has 8 divisors (see below), whose sum is σ = 18383104. Its totient is φ = 8616960.

The previous prime is 13356379. The next prime is 13356389. The reversal of 13356381 is 18365331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13356381 - 2¹ = 13356379 is a prime.

It is a super-2 number, since 2×13356381² = 356785826834322, 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 (13356389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71716 + ... + 71901.

It is an arithmetic number, because the mean of its divisors is an integer number (2297888).

Almost surely, 2^13356381 is an apocalyptic number.

It is an amenable number.

13356381 is a deficient number, since it is larger than the sum of its proper divisors (5026723).

13356381 is a wasteful number, since it uses less digits than its factorization.

13356381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143651.

The product of its digits is 6480, while the sum is 30.

The square root of 13356381 is about 3654.6382857952. The cubic root of 13356381 is about 237.2627718018.

The spelling of 13356381 in words is "thirteen million, three hundred fifty-six thousand, three hundred eighty-one".