30120203 has 2 divisors, whose sum is σ = 30120204. Its totient is φ = 30120202.

The previous prime is 30120197. The next prime is 30120217. The reversal of 30120203 is 30202103.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30120203 is a prime.

It is a super-2 number, since 2×30120203² = 1814453257522418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30120803) 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, 15060101 + 15060102.

It is an arithmetic number, because the mean of its divisors is an integer number (15060102).

Almost surely, 2^30120203 is an apocalyptic number.

30120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

30120203 is an equidigital number, since it uses as much as digits as its factorization.

30120203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30120203 is about 5488.1875879019. The cubic root of 30120203 is about 311.1376960795.

Adding to 30120203 its reverse (30202103), we get a palindrome (60322306).

The spelling of 30120203 in words is "thirty million, one hundred twenty thousand, two hundred three".