3105103872 has 112 divisors (see below), whose sum is σ = 8917594560. Its totient is φ = 955318272.

The previous prime is 3105103867. The next prime is 3105103877. The reversal of 3105103872 is 2783015013.

It is an interprime number because it is at equal distance from previous prime (3105103867) and next prime (3105103877).

It is not an unprimeable number, because it can be changed into a prime (3105103877) 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, 314629 + ... + 324347.

It is an arithmetic number, because the mean of its divisors is an integer number (79621380).

Almost surely, 2^3105103872 is an apocalyptic number.

3105103872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3105103872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4458797280).

3105103872 is an abundant number, since it is smaller than the sum of its proper divisors (5812490688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3105103872 is an equidigital number, since it uses as much as digits as its factorization.

3105103872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9761 (or 9737 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 3105103872 is about 55723.4589019741. The cubic root of 3105103872 is about 1458.8995072220.

Adding to 3105103872 its reverse (2783015013), we get a palindrome (5888118885).

The spelling of 3105103872 in words is "three billion, one hundred five million, one hundred three thousand, eight hundred seventy-two".