20203430133 has 4 divisors (see below), whose sum is σ = 26937906848. Its totient is φ = 13468953420.

The previous prime is 20203430131. The next prime is 20203430147. The reversal of 20203430133 is 33103430202.

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 not a de Polignac number, because 20203430133 - 2¹ = 20203430131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203430131) 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, 3367238353 + ... + 3367238358.

It is an arithmetic number, because the mean of its divisors is an integer number (6734476712).

Almost surely, 2^20203430133 is an apocalyptic number.

It is an amenable number.

20203430133 is a deficient number, since it is larger than the sum of its proper divisors (6734476715).

20203430133 is an equidigital number, since it uses as much as digits as its factorization.

20203430133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734476714.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20203430133 its reverse (33103430202), we get a palindrome (53306860335).

The spelling of 20203430133 in words is "twenty billion, two hundred three million, four hundred thirty thousand, one hundred thirty-three".