13401305 has 4 divisors (see below), whose sum is σ = 16081572. Its totient is φ = 10721040.

The previous prime is 13401299. The next prime is 13401307. The reversal of 13401305 is 50310431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50310431 = 2341 ⋅21491.

It can be written as a sum of positive squares in 2 ways, for example, as 4177936 + 9223369 = 2044^2 + 3037^2 .

It is not a de Polignac number, because 13401305 - 2¹⁰ = 13400281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13401307) 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, 1340126 + ... + 1340135.

It is an arithmetic number, because the mean of its divisors is an integer number (4020393).

Almost surely, 2^13401305 is an apocalyptic number.

It is an amenable number.

13401305 is a deficient number, since it is larger than the sum of its proper divisors (2680267).

13401305 is an equidigital number, since it uses as much as digits as its factorization.

13401305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680266.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13401305 is about 3660.7792886215. The cubic root of 13401305 is about 237.5284841183.

Adding to 13401305 its reverse (50310431), we get a palindrome (63711736).

The spelling of 13401305 in words is "thirteen million, four hundred one thousand, three hundred five".