13031105 has 4 divisors (see below), whose sum is σ = 15637332. Its totient is φ = 10424880.

The previous prime is 13031101. The next prime is 13031159. The reversal of 13031105 is 50113031.

13031105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50113031 = 1583 ⋅31657.

It can be written as a sum of positive squares in 2 ways, for example, as 10195249 + 2835856 = 3193^2 + 1684^2 .

It is not a de Polignac number, because 13031105 - 2² = 13031101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13031105.

It is not an unprimeable number, because it can be changed into a prime (13031101) 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, 1303106 + ... + 1303115.

It is an arithmetic number, because the mean of its divisors is an integer number (3909333).

Almost surely, 2^13031105 is an apocalyptic number.

It is an amenable number.

13031105 is a deficient number, since it is larger than the sum of its proper divisors (2606227).

13031105 is an equidigital number, since it uses as much as digits as its factorization.

13031105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606226.

The product of its (nonzero) digits is 45, while the sum is 14.

The square root of 13031105 is about 3609.8621857351. The cubic root of 13031105 is about 235.3208534142.

Adding to 13031105 its reverse (50113031), we get a palindrome (63144136).

The spelling of 13031105 in words is "thirteen million, thirty-one thousand, one hundred five".