30331303221 has 4 divisors (see below), whose sum is σ = 40441737632. Its totient is φ = 20220868812.

The previous prime is 30331303207. The next prime is 30331303229. The reversal of 30331303221 is 12230313303.

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 not a de Polignac number, because 30331303221 - 2²⁶ = 30264194357 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 (30331303229) 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, 5055217201 + ... + 5055217206.

It is an arithmetic number, because the mean of its divisors is an integer number (10110434408).

Almost surely, 2^30331303221 is an apocalyptic number.

It is an amenable number.

30331303221 is a deficient number, since it is larger than the sum of its proper divisors (10110434411).

30331303221 is a wasteful number, since it uses less digits than its factorization.

30331303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110434410.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 30331303221 its reverse (12230313303), we get a palindrome (42561616524).

The spelling of 30331303221 in words is "thirty billion, three hundred thirty-one million, three hundred three thousand, two hundred twenty-one".