203023022100 has 72 divisors (see below), whose sum is σ = 588030488640. Its totient is φ = 54082586880.

The previous prime is 203023022057. The next prime is 203023022113. The reversal of 203023022100 is 1220320302.

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 203023022100.

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, 69160 + ... + 640959.

It is an arithmetic number, because the mean of its divisors is an integer number (8167090120).

Almost surely, 2^203023022100 is an apocalyptic number.

203023022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203023022100 is an abundant number, since it is smaller than the sum of its proper divisors (385007466540).

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

203023022100 is a wasteful number, since it uses less digits than its factorization.

203023022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711089 (or 711082 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 203023022100 its reverse (1220320302), we get a palindrome (204243342402).

The spelling of 203023022100 in words is "two hundred three billion, twenty-three million, twenty-two thousand, one hundred".