203440442143 has 2 divisors, whose sum is σ = 203440442144. Its totient is φ = 203440442142.

The previous prime is 203440442141. The next prime is 203440442159. The reversal of 203440442143 is 341244044302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203440442143 - 2¹ = 203440442141 is a prime.

Together with 203440442141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203440442141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101720221071 + 101720221072.

It is an arithmetic number, because the mean of its divisors is an integer number (101720221072).

Almost surely, 2^203440442143 is an apocalyptic number.

203440442143 is a deficient number, since it is larger than the sum of its proper divisors (1).

203440442143 is an equidigital number, since it uses as much as digits as its factorization.

203440442143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 203440442143 its reverse (341244044302), we get a palindrome (544684486445).

The spelling of 203440442143 in words is "two hundred three billion, four hundred forty million, four hundred forty-two thousand, one hundred forty-three".