3231212100 has 72 divisors (see below), whose sum is σ = 9898928928. Its totient is φ = 810969600.

The previous prime is 3231212077. The next prime is 3231212107. The reversal of 3231212100 is 12121323.

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 3231212100.

It is not an unprimeable number, because it can be changed into a prime (3231212107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311686 + ... + 321885.

It is an arithmetic number, because the mean of its divisors is an integer number (137485124).

Almost surely, 2^3231212100 is an apocalyptic number.

3231212100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3231212100 is an abundant number, since it is smaller than the sum of its proper divisors (6667716828).

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

3231212100 is a wasteful number, since it uses less digits than its factorization.

3231212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633605 (or 633598 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3231212100 is about 56843.7516355140. The cubic root of 3231212100 is about 1478.3882045257.

Adding to 3231212100 its reverse (12121323), we get a palindrome (3243333423).

It can be divided in two parts, 323121 and 2100, that added together give a triangular number (325221 = T₈₀₆).

The spelling of 3231212100 in words is "three billion, two hundred thirty-one million, two hundred twelve thousand, one hundred".