30345643 has 2 divisors, whose sum is σ = 30345644. Its totient is φ = 30345642.

The previous prime is 30345607. The next prime is 30345673. The reversal of 30345643 is 34654303.

It is a strong prime.

It is an emirp because it is prime and its reverse (34654303) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30345643 is a prime.

It is not a weakly prime, because it can be changed into another prime (30345673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15172821 + 15172822.

It is an arithmetic number, because the mean of its divisors is an integer number (15172822).

Almost surely, 2^30345643 is an apocalyptic number.

30345643 is a deficient number, since it is larger than the sum of its proper divisors (1).

30345643 is an equidigital number, since it uses as much as digits as its factorization.

30345643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 30345643 is about 5508.6879563105. The cubic root of 30345643 is about 311.9120225044.

Adding to 30345643 its reverse (34654303), we get a palindrome (64999946).

The spelling of 30345643 in words is "thirty million, three hundred forty-five thousand, six hundred forty-three".