13231105 has 8 divisors (see below), whose sum is σ = 16425000. Its totient is φ = 10219776.

The previous prime is 13231103. The next prime is 13231123. The reversal of 13231105 is 50113231.

It can be written as a sum of positive squares in 4 ways, for example, as 10609 + 13220496 = 103^2 + 3636^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13231105 - 2¹ = 13231103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13231103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45480 + ... + 45769.

It is an arithmetic number, because the mean of its divisors is an integer number (2053125).

Almost surely, 2^13231105 is an apocalyptic number.

It is an amenable number.

13231105 is a deficient number, since it is larger than the sum of its proper divisors (3193895).

13231105 is an equidigital number, since it uses as much as digits as its factorization.

13231105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91283.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 13231105 is about 3637.4585908296. The cubic root of 13231105 is about 236.5186393866.

Adding to 13231105 its reverse (50113231), we get a palindrome (63344336).

The spelling of 13231105 in words is "thirteen million, two hundred thirty-one thousand, one hundred five".