203401130200421 has 4 divisors (see below), whose sum is σ = 203401165123200. Its totient is φ = 203401095277644.

The previous prime is 203401130200417. The next prime is 203401130200493. The reversal of 203401130200421 is 124002031104302.

203401130200421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203401130200421 - 2² = 203401130200417 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 (203401130200721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6381311 + ... + 21154748.

It is an arithmetic number, because the mean of its divisors is an integer number (50850291280800).

Almost surely, 2^{203401130200421} is an apocalyptic number.

It is an amenable number.

203401130200421 is a deficient number, since it is larger than the sum of its proper divisors (34922779).

203401130200421 is an equidigital number, since it uses as much as digits as its factorization.

203401130200421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34922778.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 203401130200421 its reverse (124002031104302), we get a palindrome (327403161304723).

The spelling of 203401130200421 in words is "two hundred three trillion, four hundred one billion, one hundred thirty million, two hundred thousand, four hundred twenty-one".