203400421330223 has 16 divisors (see below), whose sum is σ = 224736023002176. Its totient is φ = 182891749013760.

The previous prime is 203400421330219. The next prime is 203400421330229. The reversal of 203400421330223 is 322033124004302.

It is a cyclic number.

It is not a de Polignac number, because 203400421330223 - 2² = 203400421330219 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 (203400421330229) 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, 294565736 + ... + 295255437.

It is an arithmetic number, because the mean of its divisors is an integer number (14046001437636).

Almost surely, 2^{203400421330223} is an apocalyptic number.

203400421330223 is a deficient number, since it is larger than the sum of its proper divisors (21335601671953).

203400421330223 is a wasteful number, since it uses less digits than its factorization.

203400421330223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589821874.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 203400421330223 its reverse (322033124004302), we get a palindrome (525433545334525).

The spelling of 203400421330223 in words is "two hundred three trillion, four hundred billion, four hundred twenty-one million, three hundred thirty thousand, two hundred twenty-three".