30705013 has 2 divisors, whose sum is σ = 30705014. Its totient is φ = 30705012.

The previous prime is 30704983. The next prime is 30705019. The reversal of 30705013 is 31050703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15944049 + 14760964 = 3993^2 + 3842^2 .

It is an emirp because it is prime and its reverse (31050703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30705013 - 2¹³ = 30696821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30705019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15352506 + 15352507.

It is an arithmetic number, because the mean of its divisors is an integer number (15352507).

Almost surely, 2^30705013 is an apocalyptic number.

It is an amenable number.

30705013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30705013 is an equidigital number, since it uses as much as digits as its factorization.

30705013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 30705013 is about 5541.2104273344. The cubic root of 30705013 is about 313.1384723481.

Adding to 30705013 its reverse (31050703), we get a palindrome (61755716).

The spelling of 30705013 in words is "thirty million, seven hundred five thousand, thirteen".