203340000400 has 60 divisors (see below), whose sum is σ = 490657866100. Its totient is φ = 80980784640.

The previous prime is 203340000397. The next prime is 203340000401. The reversal of 203340000400 is 4000043302.

It can be written as a sum of positive squares in 6 ways, for example, as 14090639616 + 189249360784 = 118704^2 + 435028^2 .

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

It is not an unprimeable number, because it can be changed into a prime (203340000401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1018335 + ... + 1201534.

Almost surely, 2^203340000400 is an apocalyptic number.

203340000400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203340000400 is an abundant number, since it is smaller than the sum of its proper divisors (287317865700).

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

203340000400 is a wasteful number, since it uses less digits than its factorization.

203340000400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220116 (or 2220105 counting only the distinct ones).

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

Adding to 203340000400 its reverse (4000043302), we get a palindrome (207340043702).

The spelling of 203340000400 in words is "two hundred three billion, three hundred forty million, four hundred", and thus it is an aban number.