203404140321 has 16 divisors (see below), whose sum is σ = 274046572800. Its totient is φ = 134188591248.

The previous prime is 203404140307. The next prime is 203404140347. The reversal of 203404140321 is 123041404302.

It is not a de Polignac number, because 203404140321 - 2⁶ = 203404140257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203404140291 and 203404140300.

It is not an unprimeable number, because it can be changed into a prime (203404140301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666411 + ... + 922448.

It is an arithmetic number, because the mean of its divisors is an integer number (17127910800).

Almost surely, 2^203404140321 is an apocalyptic number.

It is an amenable number.

203404140321 is a deficient number, since it is larger than the sum of its proper divisors (70642432479).

203404140321 is a wasteful number, since it uses less digits than its factorization.

203404140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589308.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 203404140321 its reverse (123041404302), we get a palindrome (326445544623).

The spelling of 203404140321 in words is "two hundred three billion, four hundred four million, one hundred forty thousand, three hundred twenty-one".