3213032100 has 72 divisors (see below), whose sum is σ = 9348464160. Its totient is φ = 852007680.

The previous prime is 3213032087. The next prime is 3213032129. The reversal of 3213032100 is 12303123.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3213032100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23784 + ... + 83616.

It is an arithmetic number, because the mean of its divisors is an integer number (129839780).

Almost surely, 2^3213032100 is an apocalyptic number.

3213032100 is a gapful number since it is divisible by the number (30) 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 3213032100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4674232080).

3213032100 is an abundant number, since it is smaller than the sum of its proper divisors (6135432060).

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

3213032100 is a wasteful number, since it uses less digits than its factorization.

3213032100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60029 (or 60022 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 3213032100 is about 56683.6140343927. The cubic root of 3213032100 is about 1475.6103344134.

Adding to 3213032100 its reverse (12303123), we get a palindrome (3225335223).

The spelling of 3213032100 in words is "three billion, two hundred thirteen million, thirty-two thousand, one hundred".