203343423400 has 96 divisors (see below), whose sum is σ = 522901454040. Its totient is φ = 73051407360.

The previous prime is 203343423397. The next prime is 203343423421. The reversal of 203343423400 is 4324343302.

It can be written as a sum of positive squares in 12 ways, for example, as 1205061796 + 202138361604 = 34714^2 + 449598^2 .

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, 960679 + ... + 1153078.

Almost surely, 2^203343423400 is an apocalyptic number.

203343423400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203343423400 is an abundant number, since it is smaller than the sum of its proper divisors (319558030640).

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

203343423400 is a wasteful number, since it uses less digits than its factorization.

203343423400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113823 (or 2113814 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 203343423400 its reverse (4324343302), we get a palindrome (207667766702).

The spelling of 203343423400 in words is "two hundred three billion, three hundred forty-three million, four hundred twenty-three thousand, four hundred".