203011122423 has 16 divisors (see below), whose sum is σ = 285494388480. Its totient is φ = 127962627264.

The previous prime is 203011122343. The next prime is 203011122469. The reversal of 203011122423 is 324221110302.

It is not a de Polignac number, because 203011122423 - 2¹⁸ = 203010860279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203011122423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203011122473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3511686 + ... + 3569027.

It is an arithmetic number, because the mean of its divisors is an integer number (17843399280).

Almost surely, 2^203011122423 is an apocalyptic number.

203011122423 is a deficient number, since it is larger than the sum of its proper divisors (82483266057).

203011122423 is a wasteful number, since it uses less digits than its factorization.

203011122423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7081238.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 203011122423 its reverse (324221110302), we get a palindrome (527232232725).

The spelling of 203011122423 in words is "two hundred three billion, eleven million, one hundred twenty-two thousand, four hundred twenty-three".