203043401132421 has 16 divisors (see below), whose sum is σ = 272676434408000. Its totient is φ = 134386347932928.

The previous prime is 203043401132347. The next prime is 203043401132423. The reversal of 203043401132421 is 124231104340302.

203043401132421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203043401132421 - 2¹⁷ = 203043401001349 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 (203043401132423) 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, 23287815 + ... + 30796251.

It is an arithmetic number, because the mean of its divisors is an integer number (17042277150500).

Almost surely, 2^{203043401132421} is an apocalyptic number.

It is an amenable number.

203043401132421 is a deficient number, since it is larger than the sum of its proper divisors (69633033275579).

203043401132421 is a wasteful number, since it uses less digits than its factorization.

203043401132421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573428.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 203043401132421 its reverse (124231104340302), we get a palindrome (327274505472723).

The spelling of 203043401132421 in words is "two hundred three trillion, forty-three billion, four hundred one million, one hundred thirty-two thousand, four hundred twenty-one".