30838243 has 2 divisors, whose sum is σ = 30838244. Its totient is φ = 30838242.

The previous prime is 30838231. The next prime is 30838253. The reversal of 30838243 is 34283803.

It is a strong prime.

It is an emirp because it is prime and its reverse (34283803) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30838243 is a prime.

It is not a weakly prime, because it can be changed into another prime (30838253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15419121 + 15419122.

It is an arithmetic number, because the mean of its divisors is an integer number (15419122).

Almost surely, 2^30838243 is an apocalyptic number.

30838243 is a deficient number, since it is larger than the sum of its proper divisors (1).

30838243 is an equidigital number, since it uses as much as digits as its factorization.

30838243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 30838243 is about 5553.2191564893. The cubic root of 30838243 is about 313.5907247003.

The spelling of 30838243 in words is "thirty million, eight hundred thirty-eight thousand, two hundred forty-three".