203000340400 has 120 divisors (see below), whose sum is σ = 572972171184. Its totient is φ = 68139955200.

The previous prime is 203000340397. The next prime is 203000340421. The reversal of 203000340400 is 4043000302.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 1717279 + ... + 1831678.

Almost surely, 2^203000340400 is an apocalyptic number.

203000340400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203000340400 is an abundant number, since it is smaller than the sum of its proper divisors (369971830784).

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

203000340400 is a wasteful number, since it uses less digits than its factorization.

203000340400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3548999 (or 3548988 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 203000340400 its reverse (4043000302), we get a palindrome (207043340702).

The spelling of 203000340400 in words is "two hundred three billion, three hundred forty thousand, four hundred".