13531105 has 12 divisors (see below), whose sum is σ = 18888660. Its totient is φ = 9278304.

The previous prime is 13531103. The next prime is 13531123. The reversal of 13531105 is 50113531.

It can be written as a sum of positive squares in 2 ways, for example, as 10732176 + 2798929 = 3276^2 + 1673^2 .

It is not a de Polignac number, because 13531105 - 2¹ = 13531103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13531103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27370 + ... + 27859.

It is an arithmetic number, because the mean of its divisors is an integer number (1574055).

Almost surely, 2^13531105 is an apocalyptic number.

It is an amenable number.

13531105 is a deficient number, since it is larger than the sum of its proper divisors (5357555).

13531105 is an equidigital number, since it uses as much as digits as its factorization.

13531105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55248 (or 55241 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 13531105 is about 3678.4650331354. The cubic root of 13531105 is about 238.2928920031.

Adding to 13531105 its reverse (50113531), we get a palindrome (63644636).

The spelling of 13531105 in words is "thirteen million, five hundred thirty-one thousand, one hundred five".