13135405 has 16 divisors (see below), whose sum is σ = 16438320. Its totient is φ = 10063872.

The previous prime is 13135399. The next prime is 13135433. The reversal of 13135405 is 50453131.

It is a happy number.

13135405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 447561 + 12687844 = 669^2 + 3562^2 .

It is a cyclic number.

It is not a de Polignac number, because 13135405 - 2⁹ = 13134893 is a prime.

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, 22477 + ... + 23053.

It is an arithmetic number, because the mean of its divisors is an integer number (1027395).

Almost surely, 2^13135405 is an apocalyptic number.

It is an amenable number.

13135405 is a deficient number, since it is larger than the sum of its proper divisors (3302915).

13135405 is a wasteful number, since it uses less digits than its factorization.

13135405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 13135405 is about 3624.2799284823. The cubic root of 13135405 is about 235.9470160190.

Adding to 13135405 its reverse (50453131), we get a palindrome (63588536).

The spelling of 13135405 in words is "thirteen million, one hundred thirty-five thousand, four hundred five".