13193381 has 4 divisors (see below), whose sum is σ = 13209600. Its totient is φ = 13177164.

The previous prime is 13193371. The next prime is 13193393. The reversal of 13193381 is 18339131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18339131 = 2213 ⋅8287.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13193381 is a prime.

It is a super-2 number, since 2×13193381² = 348130604422322, 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 (13193371) 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, 6821 + ... + 8538.

It is an arithmetic number, because the mean of its divisors is an integer number (3302400).

Almost surely, 2^13193381 is an apocalyptic number.

It is an amenable number.

13193381 is a deficient number, since it is larger than the sum of its proper divisors (16219).

13193381 is an equidigital number, since it uses as much as digits as its factorization.

13193381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16218.

The product of its digits is 1944, while the sum is 29.

The square root of 13193381 is about 3632.2694008017. The cubic root of 13193381 is about 236.2936412385.

The spelling of 13193381 in words is "thirteen million, one hundred ninety-three thousand, three hundred eighty-one".