30103213 has 4 divisors (see below), whose sum is σ = 34403680. Its totient is φ = 25802748.

The previous prime is 30103207. The next prime is 30103217. The reversal of 30103213 is 31230103.

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: 31230103 = 139 ⋅224677.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30103213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30103193 and 30103202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103217) 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, 2150223 + ... + 2150236.

It is an arithmetic number, because the mean of its divisors is an integer number (8600920).

Almost surely, 2^30103213 is an apocalyptic number.

It is an amenable number.

30103213 is a deficient number, since it is larger than the sum of its proper divisors (4300467).

30103213 is an equidigital number, since it uses as much as digits as its factorization.

30103213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300466.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30103213 is about 5486.6394997302. The cubic root of 30103213 is about 311.0791835953.

Adding to 30103213 its reverse (31230103), we get a palindrome (61333316).

The spelling of 30103213 in words is "thirty million, one hundred three thousand, two hundred thirteen".