203434020223 has 16 divisors (see below), whose sum is σ = 247766353920. Its totient is φ = 163241882496.

The previous prime is 203434020221. The next prime is 203434020227. The reversal of 203434020223 is 322020434302.

It is not a de Polignac number, because 203434020223 - 2¹ = 203434020221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203434020221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13434618 + ... + 13449751.

It is an arithmetic number, because the mean of its divisors is an integer number (15485397120).

Almost surely, 2^203434020223 is an apocalyptic number.

203434020223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

203434020223 is a deficient number, since it is larger than the sum of its proper divisors (44332333697).

203434020223 is a wasteful number, since it uses less digits than its factorization.

203434020223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26884446.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 203434020223 its reverse (322020434302), we get a palindrome (525454454525).

The spelling of 203434020223 in words is "two hundred three billion, four hundred thirty-four million, twenty thousand, two hundred twenty-three".