30340621 has 4 divisors (see below), whose sum is σ = 30365244. Its totient is φ = 30316000.

The previous prime is 30340619. The next prime is 30340637. The reversal of 30340621 is 12604303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4473225 + 25867396 = 2115^2 + 5086^2 .

It is a cyclic number.

It is not a de Polignac number, because 30340621 - 2¹ = 30340619 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 (30340021) 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, 10360 + ... + 12961.

It is an arithmetic number, because the mean of its divisors is an integer number (7591311).

Almost surely, 2^30340621 is an apocalyptic number.

It is an amenable number.

30340621 is a deficient number, since it is larger than the sum of its proper divisors (24623).

30340621 is a wasteful number, since it uses less digits than its factorization.

30340621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24622.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 30340621 is about 5508.2321120301. The cubic root of 30340621 is about 311.8948151072.

Adding to 30340621 its reverse (12604303), we get a palindrome (42944924).

The spelling of 30340621 in words is "thirty million, three hundred forty thousand, six hundred twenty-one".