203420034300 has 144 divisors (see below), whose sum is σ = 673565000192. Its totient is φ = 46432224000.

The previous prime is 203420034263. The next prime is 203420034317. The reversal of 203420034300 is 3430024302.

It is a super-2 number, since 2×203420034300² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1473225 + ... + 1605375.

Almost surely, 2^203420034300 is an apocalyptic number.

203420034300 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 203420034300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336782500096).

203420034300 is an abundant number, since it is smaller than the sum of its proper divisors (470144965892).

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

203420034300 is a wasteful number, since it uses less digits than its factorization.

203420034300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132908 (or 132901 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 203420034300 its reverse (3430024302), we get a palindrome (206850058602).

The spelling of 203420034300 in words is "two hundred three billion, four hundred twenty million, thirty-four thousand, three hundred".