203130223321 has 4 divisors (see below), whose sum is σ = 206460227044. Its totient is φ = 199800219600.

The previous prime is 203130223301. The next prime is 203130223333. The reversal of 203130223321 is 123322031302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28878244096 + 174251979225 = 169936^2 + 417435^2 .

It is a cyclic number.

It is not a de Polignac number, because 203130223321 - 2²⁵ = 203096668889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203130223292 and 203130223301.

It is not an unprimeable number, because it can be changed into a prime (203130223301) 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, 1665001770 + ... + 1665001891.

It is an arithmetic number, because the mean of its divisors is an integer number (51615056761).

Almost surely, 2^203130223321 is an apocalyptic number.

It is an amenable number.

203130223321 is a deficient number, since it is larger than the sum of its proper divisors (3330003723).

203130223321 is an equidigital number, since it uses as much as digits as its factorization.

203130223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330003722.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 203130223321 its reverse (123322031302), we get a palindrome (326452254623).

The spelling of 203130223321 in words is "two hundred three billion, one hundred thirty million, two hundred twenty-three thousand, three hundred twenty-one".