30430993 has 4 divisors (see below), whose sum is σ = 30450160. Its totient is φ = 30411828.

The previous prime is 30430973. The next prime is 30431021. The reversal of 30430993 is 39903403.

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 a cyclic number.

It is not a de Polignac number, because 30430993 - 2⁹ = 30430481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30430903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6963 + ... + 10456.

It is an arithmetic number, because the mean of its divisors is an integer number (7612540).

Almost surely, 2^30430993 is an apocalyptic number.

It is an amenable number.

30430993 is a deficient number, since it is larger than the sum of its proper divisors (19167).

30430993 is a wasteful number, since it uses less digits than its factorization.

30430993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19166.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 30430993 is about 5516.4293705258. The cubic root of 30430993 is about 312.2041761574.

The spelling of 30430993 in words is "thirty million, four hundred thirty thousand, nine hundred ninety-three".