203242442423 has 2 divisors, whose sum is σ = 203242442424. Its totient is φ = 203242442422.

The previous prime is 203242442411. The next prime is 203242442441. The reversal of 203242442423 is 324244242302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203242442423 - 2¹² = 203242438327 is a prime.

It is a super-2 number, since 2×203242442423² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203242442423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203242442443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101621221211 + 101621221212.

It is an arithmetic number, because the mean of its divisors is an integer number (101621221212).

Almost surely, 2^203242442423 is an apocalyptic number.

203242442423 is a deficient number, since it is larger than the sum of its proper divisors (1).

203242442423 is an equidigital number, since it uses as much as digits as its factorization.

203242442423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 203242442423 its reverse (324244242302), we get a palindrome (527486684725).

The spelling of 203242442423 in words is "two hundred three billion, two hundred forty-two million, four hundred forty-two thousand, four hundred twenty-three".