2931085605 has 32 divisors (see below), whose sum is σ = 5362156800. Its totient is φ = 1339310592.

The previous prime is 2931085541. The next prime is 2931085607. The reversal of 2931085605 is 5065801392.

2931085605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2931085605 - 2⁶ = 2931085541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2931085607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287841 + ... + 297849.

It is an arithmetic number, because the mean of its divisors is an integer number (167567400).

Almost surely, 2^2931085605 is an apocalyptic number.

It is an amenable number.

2931085605 is a deficient number, since it is larger than the sum of its proper divisors (2431071195).

2931085605 is a wasteful number, since it uses less digits than its factorization.

2931085605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12813.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 2931085605 is about 54139.5013368243. The cubic root of 2931085605 is about 1431.1203838050.

Adding to 2931085605 its reverse (5065801392), we get a palindrome (7996886997).

The spelling of 2931085605 in words is "two billion, nine hundred thirty-one million, eighty-five thousand, six hundred five".