30103121 has 4 divisors (see below), whose sum is σ = 30154992. Its totient is φ = 30051252.

The previous prime is 30103111. The next prime is 30103123. The reversal of 30103121 is 12130103.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30103121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30103123) 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 in 3 ways as a sum of consecutive naturals, for example, 25055 + ... + 26228.

It is an arithmetic number, because the mean of its divisors is an integer number (7538748).

Almost surely, 2^30103121 is an apocalyptic number.

It is an amenable number.

30103121 is a deficient number, since it is larger than the sum of its proper divisors (51871).

30103121 is an equidigital number, since it uses as much as digits as its factorization.

30103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51870.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 30103121 is about 5486.6311157212. The cubic root of 30103121 is about 311.0788666932.

Adding to 30103121 its reverse (12130103), we get a palindrome (42233224).

It can be divided in two parts, 30103 and 121, that multiplied together give a palindrome (3642463).

The spelling of 30103121 in words is "thirty million, one hundred three thousand, one hundred twenty-one".