203023205112 has 256 divisors, whose sum is σ = 664965504000. Its totient is φ = 50155573248.

The previous prime is 203023205111. The next prime is 203023205183. The reversal of 203023205112 is 211502320302.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203023205111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3665658 + ... + 3720630.

It is an arithmetic number, because the mean of its divisors is an integer number (2597521500).

Almost surely, 2^203023205112 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 203023205112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332482752000).

203023205112 is an abundant number, since it is smaller than the sum of its proper divisors (461942298888).

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

203023205112 is a wasteful number, since it uses less digits than its factorization.

203023205112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55110 (or 55106 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 203023205112 its reverse (211502320302), we get a palindrome (414525525414).

The spelling of 203023205112 in words is "two hundred three billion, twenty-three million, two hundred five thousand, one hundred twelve".