30243391 has 8 divisors (see below), whose sum is σ = 32123520. Its totient is φ = 28374528.

The previous prime is 30243359. The next prime is 30243397. The reversal of 30243391 is 19334203.

It is a happy number.

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 30243391 - 2⁵ = 30243359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30243397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3090 + ... + 8368.

It is an arithmetic number, because the mean of its divisors is an integer number (4015440).

Almost surely, 2^30243391 is an apocalyptic number.

30243391 is a deficient number, since it is larger than the sum of its proper divisors (1880129).

30243391 is a wasteful number, since it uses less digits than its factorization.

30243391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30243391 is about 5499.3991489980. The cubic root of 30243391 is about 311.5612910115.

Adding to 30243391 its reverse (19334203), we get a palindrome (49577594).

The spelling of 30243391 in words is "thirty million, two hundred forty-three thousand, three hundred ninety-one".