203343014323421 has 64 divisors (see below), whose sum is σ = 253441515909120. Its totient is φ = 159271498229760.

The previous prime is 203343014323403. The next prime is 203343014323439. The reversal of 203343014323421 is 124323410343302.

It is an interprime number because it is at equal distance from previous prime (203343014323403) and next prime (203343014323439).

It is a de Polignac number, because none of the positive numbers 2^k-203343014323421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203343014323021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 255338960 + ... + 256134086.

It is an arithmetic number, because the mean of its divisors is an integer number (3960023686080).

Almost surely, 2^{203343014323421} is an apocalyptic number.

It is an amenable number.

203343014323421 is a deficient number, since it is larger than the sum of its proper divisors (50098501585699).

203343014323421 is a wasteful number, since it uses less digits than its factorization.

203343014323421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795754.

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

Adding to 203343014323421 its reverse (124323410343302), we get a palindrome (327666424666723).

The spelling of 203343014323421 in words is "two hundred three trillion, three hundred forty-three billion, fourteen million, three hundred twenty-three thousand, four hundred twenty-one".