3215105012 has 48 divisors (see below), whose sum is σ = 6714153600. Its totient is φ = 1345833216.

The previous prime is 3215105011. The next prime is 3215105021. The reversal of 3215105012 is 2105015123.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215105011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31748 + ... + 86244.

It is an arithmetic number, because the mean of its divisors is an integer number (139878200).

Almost surely, 2^3215105012 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 3215105012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3357076800).

3215105012 is an abundant number, since it is smaller than the sum of its proper divisors (3499048588).

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

3215105012 is a wasteful number, since it uses less digits than its factorization.

3215105012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54565 (or 54549 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 3215105012 is about 56701.8960176818. The cubic root of 3215105012 is about 1475.9275999230.

The spelling of 3215105012 in words is "three billion, two hundred fifteen million, one hundred five thousand, twelve".