3105531515112 has 128 divisors (see below), whose sum is σ = 8428860518400. Its totient is φ = 947801530368.

The previous prime is 3105531515077. The next prime is 3105531515117. The reversal of 3105531515112 is 2115151355013.

It is not an unprimeable number, because it can be changed into a prime (3105531515117) 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, 265039078 + ... + 265050794.

It is an arithmetic number, because the mean of its divisors is an integer number (65850472800).

Almost surely, 2^{3105531515112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3105531515112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4214430259200).

3105531515112 is an abundant number, since it is smaller than the sum of its proper divisors (5323329003288).

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

3105531515112 is a wasteful number, since it uses less digits than its factorization.

3105531515112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18555 (or 18551 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 33.

The spelling of 3105531515112 in words is "three trillion, one hundred five billion, five hundred thirty-one million, five hundred fifteen thousand, one hundred twelve".