30231303221 has 4 divisors (see below), whose sum is σ = 34550060832. Its totient is φ = 25912545612.

The previous prime is 30231303203. The next prime is 30231303233. The reversal of 30231303221 is 12230313203.

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 30231303221 - 2²² = 30227108917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30231303193 and 30231303202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231303251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2159378795 + ... + 2159378808.

It is an arithmetic number, because the mean of its divisors is an integer number (8637515208).

Almost surely, 2^30231303221 is an apocalyptic number.

It is an amenable number.

30231303221 is a deficient number, since it is larger than the sum of its proper divisors (4318757611).

30231303221 is an equidigital number, since it uses as much as digits as its factorization.

30231303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318757610.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30231303221 its reverse (12230313203), we get a palindrome (42461616424).

The spelling of 30231303221 in words is "thirty billion, two hundred thirty-one million, three hundred three thousand, two hundred twenty-one".