3213105500 has 96 divisors (see below), whose sum is σ = 7675432128. Its totient is φ = 1165344000.

The previous prime is 3213105481. The next prime is 3213105517. The reversal of 3213105500 is 55013123.

3213105500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4031102 + ... + 4031898.

It is an arithmetic number, because the mean of its divisors is an integer number (79952418).

Almost surely, 2^3213105500 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 3213105500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3837716064).

3213105500 is an abundant number, since it is smaller than the sum of its proper divisors (4462326628).

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

3213105500 is a wasteful number, since it uses less digits than its factorization.

3213105500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 3213105500 is about 56684.2614841192. The cubic root of 3213105500 is about 1475.6215708375.

Adding to 3213105500 its reverse (55013123), we get a palindrome (3268118623).

The spelling of 3213105500 in words is "three billion, two hundred thirteen million, one hundred five thousand, five hundred".