13181005 has 16 divisors (see below), whose sum is σ = 16372224. Its totient is φ = 10180800.

The previous prime is 13180997. The next prime is 13181027. The reversal of 13181005 is 50018131.

It is not a de Polignac number, because 13181005 - 2³ = 13180997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21412 + ... + 22018.

It is an arithmetic number, because the mean of its divisors is an integer number (1023264).

Almost surely, 2^13181005 is an apocalyptic number.

It is an amenable number.

13181005 is a deficient number, since it is larger than the sum of its proper divisors (3191219).

13181005 is a wasteful number, since it uses less digits than its factorization.

13181005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 13181005 is about 3630.5653829672. The cubic root of 13181005 is about 236.2197333454.

Adding to 13181005 its reverse (50018131), we get a palindrome (63199136).

The spelling of 13181005 in words is "thirteen million, one hundred eighty-one thousand, five".