13481405 has 16 divisors (see below), whose sum is σ = 18768000. Its totient is φ = 9104832.

The previous prime is 13481401. The next prime is 13481407. The reversal of 13481405 is 50418431.

It is a cyclic number.

It is not a de Polignac number, because 13481405 - 2² = 13481401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13481401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530 + ... + 5219.

It is an arithmetic number, because the mean of its divisors is an integer number (1173000).

Almost surely, 2^13481405 is an apocalyptic number.

It is an amenable number.

13481405 is a deficient number, since it is larger than the sum of its proper divisors (5286595).

13481405 is an equidigital number, since it uses as much as digits as its factorization.

13481405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5828.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 13481405 is about 3671.7032832188. The cubic root of 13481405 is about 238.0007826634. Note that the first 3 decimals are identical.

Adding to 13481405 its reverse (50418431), we get a palindrome (63899836).

The spelling of 13481405 in words is "thirteen million, four hundred eighty-one thousand, four hundred five".