39131105 has 12 divisors (see below), whose sum is σ = 50848380. Its totient is φ = 28896192.

The previous prime is 39131069. The next prime is 39131107. The reversal of 39131105 is 50113193.

39131105 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 6 ways, for example, as 3179089 + 35952016 = 1783^2 + 5996^2 .

It is not a de Polignac number, because 39131105 - 2⁸ = 39130849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39131107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22310 + ... + 23999.

It is an arithmetic number, because the mean of its divisors is an integer number (4237365).

Almost surely, 2^39131105 is an apocalyptic number.

It is an amenable number.

39131105 is a deficient number, since it is larger than the sum of its proper divisors (11717275).

39131105 is a wasteful number, since it uses less digits than its factorization.

39131105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46340 (or 46327 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 39131105 is about 6255.4859923111. The cubic root of 39131105 is about 339.5007233615.

Adding to 39131105 its reverse (50113193), we get a palindrome (89244298).

The spelling of 39131105 in words is "thirty-nine million, one hundred thirty-one thousand, one hundred five".