30423221 has 8 divisors (see below), whose sum is σ = 30745344. Its totient is φ = 30103200.

The previous prime is 30423191. The next prime is 30423229. The reversal of 30423221 is 12232403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30423221 - 2⁶ = 30423157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30423221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30423229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50321 + ... + 50921.

It is an arithmetic number, because the mean of its divisors is an integer number (3843168).

Almost surely, 2^30423221 is an apocalyptic number.

It is an amenable number.

30423221 is a deficient number, since it is larger than the sum of its proper divisors (322123).

30423221 is a wasteful number, since it uses less digits than its factorization.

30423221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30423221 is about 5515.7248843647. The cubic root of 30423221 is about 312.1775951708.

Adding to 30423221 its reverse (12232403), we get a palindrome (42655624).

The spelling of 30423221 in words is "thirty million, four hundred twenty-three thousand, two hundred twenty-one".