203436343421 has 8 divisors (see below), whose sum is σ = 210047232000. Its totient is φ = 196828481520.

The previous prime is 203436343351. The next prime is 203436343441. The reversal of 203436343421 is 124343634302.

It is a happy number.

203436343421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203436343421 - 2¹⁴ = 203436327037 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 (203436343441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619661 + ... + 889298.

It is an arithmetic number, because the mean of its divisors is an integer number (26255904000).

Almost surely, 2^203436343421 is an apocalyptic number.

It is an amenable number.

203436343421 is a deficient number, since it is larger than the sum of its proper divisors (6610888579).

203436343421 is a wasteful number, since it uses less digits than its factorization.

203436343421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513339.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 203436343421 its reverse (124343634302), we get a palindrome (327779977723).

The spelling of 203436343421 in words is "two hundred three billion, four hundred thirty-six million, three hundred forty-three thousand, four hundred twenty-one".