20403303143 has 2 divisors, whose sum is σ = 20403303144. Its totient is φ = 20403303142.

The previous prime is 20403303131. The next prime is 20403303223. The reversal of 20403303143 is 34130330402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20403303143 - 2⁴ = 20403303127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20403303043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201651571 + 10201651572.

It is an arithmetic number, because the mean of its divisors is an integer number (10201651572).

Almost surely, 2^20403303143 is an apocalyptic number.

20403303143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20403303143 is an equidigital number, since it uses as much as digits as its factorization.

20403303143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20403303143 its reverse (34130330402), we get a palindrome (54533633545).

The spelling of 20403303143 in words is "twenty billion, four hundred three million, three hundred three thousand, one hundred forty-three".