3105312105 has 32 divisors (see below), whose sum is σ = 5681127168. Its totient is φ = 1418860800.

The previous prime is 3105312097. The next prime is 3105312127. The reversal of 3105312105 is 5012135013.

It is not a de Polignac number, because 3105312105 - 2³ = 3105312097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243795 + ... + 256215.

It is an arithmetic number, because the mean of its divisors is an integer number (177535224).

Almost surely, 2^3105312105 is an apocalyptic number.

3105312105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3105312105 is a deficient number, since it is larger than the sum of its proper divisors (2575815063).

3105312105 is a wasteful number, since it uses less digits than its factorization.

3105312105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14817.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 3105312105 is about 55725.3273207076. The cubic root of 3105312105 is about 1458.9321185015.

Adding to 3105312105 its reverse (5012135013), we get a palindrome (8117447118).

The spelling of 3105312105 in words is "three billion, one hundred five million, three hundred twelve thousand, one hundred five".