30334021 has 4 divisors (see below), whose sum is σ = 30470272. Its totient is φ = 30197772.

The previous prime is 30334009. The next prime is 30334039. The reversal of 30334021 is 12043303.

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: 12043303 = 307 ⋅39229.

It is a cyclic number.

It is not a de Polignac number, because 30334021 - 2⁹ = 30333509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30333986 and 30334004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30334081) 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, 67791 + ... + 68236.

It is an arithmetic number, because the mean of its divisors is an integer number (7617568).

Almost surely, 2^30334021 is an apocalyptic number.

It is an amenable number.

30334021 is a deficient number, since it is larger than the sum of its proper divisors (136251).

30334021 is a wasteful number, since it uses less digits than its factorization.

30334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136250.

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

The square root of 30334021 is about 5507.6329761523. The cubic root of 30334021 is about 311.8721979580.

Adding to 30334021 its reverse (12043303), we get a palindrome (42377324).

The spelling of 30334021 in words is "thirty million, three hundred thirty-four thousand, twenty-one".