30105073 has 4 divisors (see below), whose sum is σ = 30125808. Its totient is φ = 30084340.

The previous prime is 30105071. The next prime is 30105077. The reversal of 30105073 is 37050103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37050103 = 1877 ⋅19739.

It is a cyclic number.

It is not a de Polignac number, because 30105073 - 2¹ = 30105071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30105073.

It is not an unprimeable number, because it can be changed into a prime (30105071) 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, 8011 + ... + 11152.

It is an arithmetic number, because the mean of its divisors is an integer number (7531452).

Almost surely, 2^30105073 is an apocalyptic number.

It is an amenable number.

30105073 is a deficient number, since it is larger than the sum of its proper divisors (20735).

30105073 is a wasteful number, since it uses less digits than its factorization.

30105073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20734.

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

The square root of 30105073 is about 5486.8089997739. The cubic root of 30105073 is about 311.0855903905.

Adding to 30105073 its reverse (37050103), we get a palindrome (67155176).

The spelling of 30105073 in words is "thirty million, one hundred five thousand, seventy-three".