13269381 has 4 divisors (see below), whose sum is σ = 17692512. Its totient is φ = 8846252.

The previous prime is 13269379. The next prime is 13269397. The reversal of 13269381 is 18396231.

13269381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13269381 - 2¹ = 13269379 is a prime.

It is a super-2 number, since 2×13269381² = 352152944246322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13269301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2211561 + ... + 2211566.

It is an arithmetic number, because the mean of its divisors is an integer number (4423128).

Almost surely, 2^13269381 is an apocalyptic number.

It is an amenable number.

13269381 is a deficient number, since it is larger than the sum of its proper divisors (4423131).

13269381 is an equidigital number, since it uses as much as digits as its factorization.

13269381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423130.

The product of its digits is 7776, while the sum is 33.

The square root of 13269381 is about 3642.7161569356. The cubic root of 13269381 is about 236.7464931627.

The spelling of 13269381 in words is "thirteen million, two hundred sixty-nine thousand, three hundred eighty-one".