203400421330304 has 128 divisors (see below), whose sum is σ = 448353263957760. Its totient is φ = 91136695552000.

The previous prime is 203400421330259. The next prime is 203400421330361. The reversal of 203400421330304 is 403033124004302.

203400421330304 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583938914 + ... + 584287134.

It is an arithmetic number, because the mean of its divisors is an integer number (3502759874670).

Almost surely, 2^{203400421330304} 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 203400421330304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224176631978880).

203400421330304 is an abundant number, since it is smaller than the sum of its proper divisors (244952842627456).

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

203400421330304 is a wasteful number, since it uses less digits than its factorization.

203400421330304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354160 (or 354148 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 203400421330304 its reverse (403033124004302), we get a palindrome (606433545334606).

The spelling of 203400421330304 in words is "two hundred three trillion, four hundred billion, four hundred twenty-one million, three hundred thirty thousand, three hundred four".