30430220203 has 4 divisors (see below), whose sum is σ = 32031810760. Its totient is φ = 28828629648.

The previous prime is 30430220189. The next prime is 30430220207. The reversal of 30430220203 is 30202203403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30202203403 = 9173 ⋅3292511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30430220203 is a prime.

It is a super-2 number, since 2×30430220203² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1601590537 = 30430220203 / (3 + 0 + 4 + 3 + 0 + 2 + 2 + 0 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30430220207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800795250 + ... + 800795287.

It is an arithmetic number, because the mean of its divisors is an integer number (8007952690).

Almost surely, 2^30430220203 is an apocalyptic number.

30430220203 is a deficient number, since it is larger than the sum of its proper divisors (1601590557).

30430220203 is a wasteful number, since it uses less digits than its factorization.

30430220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601590556.

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 30430220203 its reverse (30202203403), we get a palindrome (60632423606).

The spelling of 30430220203 in words is "thirty billion, four hundred thirty million, two hundred twenty thousand, two hundred three".