203403121400000 has 168 divisors, whose sum is σ = 512773364435472. Its totient is φ = 80027452800000.

The previous prime is 203403121399967. The next prime is 203403121400051. The reversal of 203403121400000 is 4121304302.

203403121400000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 3863807 + ... + 20536193.

It is an arithmetic number, because the mean of its divisors is an integer number (3052222407354).

Almost surely, 2^{203403121400000} is an apocalyptic number.

203403121400000 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 203403121400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256386682217736).

203403121400000 is an abundant number, since it is smaller than the sum of its proper divisors (309370243035472).

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

203403121400000 is an frugal number, since it uses more digits than its factorization.

203403121400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16672485 (or 16672455 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203403121400000 its reverse (4121304302), we get a palindrome (203407242704302).

The spelling of 203403121400000 in words is "two hundred three trillion, four hundred three billion, one hundred twenty-one million, four hundred thousand".