20201043403 has 4 divisors (see below), whose sum is σ = 20205677848. Its totient is φ = 20196408960.

The previous prime is 20201043397. The next prime is 20201043427. The reversal of 20201043403 is 30434010202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30434010202 = 2 ⋅15217005101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201043403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201043463) 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, 2310678 + ... + 2319403.

It is an arithmetic number, because the mean of its divisors is an integer number (5051419462).

Almost surely, 2^20201043403 is an apocalyptic number.

20201043403 is a deficient number, since it is larger than the sum of its proper divisors (4634445).

20201043403 is an equidigital number, since it uses as much as digits as its factorization.

20201043403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634444.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20201043403 its reverse (30434010202), we get a palindrome (50635053605).

The spelling of 20201043403 in words is "twenty billion, two hundred one million, forty-three thousand, four hundred three".