30105913 has 2 divisors, whose sum is σ = 30105914. Its totient is φ = 30105912.

The previous prime is 30105883. The next prime is 30105947. The reversal of 30105913 is 31950103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29030544 + 1075369 = 5388^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 30105913 - 2⁹ = 30105401 is a prime.

It is not a weakly prime, because it can be changed into another prime (30102913) 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, 15052956 + 15052957.

It is an arithmetic number, because the mean of its divisors is an integer number (15052957).

Almost surely, 2^30105913 is an apocalyptic number.

It is an amenable number.

30105913 is a deficient number, since it is larger than the sum of its proper divisors (1).

30105913 is an equidigital number, since it uses as much as digits as its factorization.

30105913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 30105913 is about 5486.8855464644. The cubic root of 30105913 is about 311.0884836954.

The spelling of 30105913 in words is "thirty million, one hundred five thousand, nine hundred thirteen".