20403303043 has 2 divisors, whose sum is σ = 20403303044. Its totient is φ = 20403303042.

The previous prime is 20403302923. The next prime is 20403303073. The reversal of 20403303043 is 34030330402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20403303043 - 2²⁵ = 20369748611 is a prime.

It is not a weakly prime, because it can be changed into another prime (20403303073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201651521 + 10201651522.

It is an arithmetic number, because the mean of its divisors is an integer number (10201651522).

Almost surely, 2^20403303043 is an apocalyptic number.

20403303043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20403303043 is an equidigital number, since it uses as much as digits as its factorization.

20403303043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 22.

Adding to 20403303043 its reverse (34030330402), we get a palindrome (54433633445).

The spelling of 20403303043 in words is "twenty billion, four hundred three million, three hundred three thousand, forty-three".