13183681 has 4 divisors (see below), whose sum is σ = 15067072. Its totient is φ = 11300292.

The previous prime is 13183627. The next prime is 13183693. The reversal of 13183681 is 18638131.

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 13183681 - 2¹¹ = 13181633 is a prime.

It is a super-2 number, since 2×13183681² = 347618889419522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13180681) 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, 941685 + ... + 941698.

It is an arithmetic number, because the mean of its divisors is an integer number (3766768).

Almost surely, 2^13183681 is an apocalyptic number.

It is an amenable number.

13183681 is a deficient number, since it is larger than the sum of its proper divisors (1883391).

13183681 is an equidigital number, since it uses as much as digits as its factorization.

13183681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883390.

The product of its digits is 3456, while the sum is 31.

The square root of 13183681 is about 3630.9339019046. The cubic root of 13183681 is about 236.2357179948.

The spelling of 13183681 in words is "thirteen million, one hundred eighty-three thousand, six hundred eighty-one".