20403104203 has 2 divisors, whose sum is σ = 20403104204. Its totient is φ = 20403104202.

The previous prime is 20403104179. The next prime is 20403104221. The reversal of 20403104203 is 30240130402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20403104203 - 2⁵ = 20403104171 is a prime.

It is a super-2 number, since 2×20403104203² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20403104303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201552101 + 10201552102.

It is an arithmetic number, because the mean of its divisors is an integer number (10201552102).

Almost surely, 2^20403104203 is an apocalyptic number.

20403104203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20403104203 is an equidigital number, since it uses as much as digits as its factorization.

20403104203 is an evil number, because the sum of its binary digits is even.

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

Adding to 20403104203 its reverse (30240130402), we get a palindrome (50643234605).

The spelling of 20403104203 in words is "twenty billion, four hundred three million, one hundred four thousand, two hundred three".