203312002100 has 72 divisors (see below), whose sum is σ = 446022577728. Its totient is φ = 80438112000.

The previous prime is 203312002093. The next prime is 203312002147. The reversal of 203312002100 is 1200213302.

It is a happy number.

It is a congruent number.

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, 3489407 + ... + 3547193.

It is an arithmetic number, because the mean of its divisors is an integer number (6194758024).

Almost surely, 2^203312002100 is an apocalyptic number.

203312002100 is a gapful number since it is divisible by the number (20) 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 203312002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223011288864).

203312002100 is an abundant number, since it is smaller than the sum of its proper divisors (242710575628).

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

203312002100 is a wasteful number, since it uses less digits than its factorization.

203312002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58185 (or 58178 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 203312002100 its reverse (1200213302), we get a palindrome (204512215402).

The spelling of 203312002100 in words is "two hundred three billion, three hundred twelve million, two thousand, one hundred".