20430030111 has 4 divisors (see below), whose sum is σ = 27240040152. Its totient is φ = 13620020072.

The previous prime is 20430030091. The next prime is 20430030139. The reversal of 20430030111 is 11103003402.

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

It is a cyclic number.

It is not a de Polignac number, because 20430030111 - 2¹³ = 20430021919 is a prime.

It is a super-2 number, since 2×20430030111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430030911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405005016 + ... + 3405005021.

It is an arithmetic number, because the mean of its divisors is an integer number (6810010038).

Almost surely, 2^20430030111 is an apocalyptic number.

20430030111 is a deficient number, since it is larger than the sum of its proper divisors (6810010041).

20430030111 is an equidigital number, since it uses as much as digits as its factorization.

20430030111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810010040.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20430030111 its reverse (11103003402), we get a palindrome (31533033513).

The spelling of 20430030111 in words is "twenty billion, four hundred thirty million, thirty thousand, one hundred eleven".