30203105 has 4 divisors (see below), whose sum is σ = 36243732. Its totient is φ = 24162480.

The previous prime is 30203099. The next prime is 30203153. The reversal of 30203105 is 50130203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12327121 + 17875984 = 3511^2 + 4228^2 .

It is not a de Polignac number, because 30203105 - 2¹² = 30199009 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 30203105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3020306 + ... + 3020315.

It is an arithmetic number, because the mean of its divisors is an integer number (9060933).

Almost surely, 2^30203105 is an apocalyptic number.

It is an amenable number.

30203105 is a deficient number, since it is larger than the sum of its proper divisors (6040627).

30203105 is an equidigital number, since it uses as much as digits as its factorization.

30203105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6040626.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 30203105 is about 5495.7351646527. The cubic root of 30203105 is about 311.4228901353.

Adding to 30203105 its reverse (50130203), we get a palindrome (80333308).

The spelling of 30203105 in words is "thirty million, two hundred three thousand, one hundred five".