30430221 has 8 divisors (see below), whose sum is σ = 42960384. Its totient is φ = 19093440.

The previous prime is 30430201. The next prime is 30430223. The reversal of 30430221 is 12203403.

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

It is not a de Polignac number, because 30430221 - 2⁷ = 30430093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30430221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30430223) 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, 298285 + ... + 298386.

It is an arithmetic number, because the mean of its divisors is an integer number (5370048).

Almost surely, 2^30430221 is an apocalyptic number.

It is an amenable number.

30430221 is a deficient number, since it is larger than the sum of its proper divisors (12530163).

30430221 is a wasteful number, since it uses less digits than its factorization.

30430221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596691.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30430221 is about 5516.3593972837. The cubic root of 30430221 is about 312.2015360457.

Adding to 30430221 its reverse (12203403), we get a palindrome (42633624).

The spelling of 30430221 in words is "thirty million, four hundred thirty thousand, two hundred twenty-one".