20350320203 has 4 divisors (see below), whose sum is σ = 21547397880. Its totient is φ = 19153242528.

The previous prime is 20350320181. The next prime is 20350320247. The reversal of 20350320203 is 30202305302.

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 20350320203 - 2¹⁶ = 20350254667 is a prime.

It is a super-2 number, since 2×20350320203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20350320103) 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, 598538813 + ... + 598538846.

It is an arithmetic number, because the mean of its divisors is an integer number (5386849470).

Almost surely, 2^20350320203 is an apocalyptic number.

20350320203 is a deficient number, since it is larger than the sum of its proper divisors (1197077677).

20350320203 is a wasteful number, since it uses less digits than its factorization.

20350320203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197077676.

The product of its (nonzero) digits is 1080, while the sum is 20.

Adding to 20350320203 its reverse (30202305302), we get a palindrome (50552625505).

The spelling of 20350320203 in words is "twenty billion, three hundred fifty million, three hundred twenty thousand, two hundred three".