30330421 has 4 divisors (see below), whose sum is σ = 33087744. Its totient is φ = 27573100.

The previous prime is 30330413. The next prime is 30330427. The reversal of 30330421 is 12403303.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12403303 = 11 ⋅1127573.

It is a cyclic number.

It is not a de Polignac number, because 30330421 - 2³ = 30330413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30330395 and 30330404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30330427) 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, 1378645 + ... + 1378666.

It is an arithmetic number, because the mean of its divisors is an integer number (8271936).

Almost surely, 2^30330421 is an apocalyptic number.

It is an amenable number.

30330421 is a deficient number, since it is larger than the sum of its proper divisors (2757323).

30330421 is a wasteful number, since it uses less digits than its factorization.

30330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757322.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30330421 is about 5507.3061472920. The cubic root of 30330421 is about 311.8598599483.

Adding to 30330421 its reverse (12403303), we get a palindrome (42733724).

The spelling of 30330421 in words is "thirty million, three hundred thirty thousand, four hundred twenty-one".