203112006442423 has 6 divisors (see below), whose sum is σ = 219937853130144. Its totient is φ = 187488005946696.

The previous prime is 203112006442357. The next prime is 203112006442439. The reversal of 203112006442423 is 324244600211302.

It is a de Polignac number, because none of the positive numbers 2^k-203112006442423 is a prime.

It is a super-2 number, since 2×203112006442423² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203112006442493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600923095815 + ... + 600923096152.

It is an arithmetic number, because the mean of its divisors is an integer number (36656308855024).

Almost surely, 2^{203112006442423} is an apocalyptic number.

203112006442423 is a deficient number, since it is larger than the sum of its proper divisors (16825846687721).

203112006442423 is a wasteful number, since it uses less digits than its factorization.

203112006442423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201846191993 (or 1201846191980 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 203112006442423 its reverse (324244600211302), we get a palindrome (527356606653725).

The spelling of 203112006442423 in words is "two hundred three trillion, one hundred twelve billion, six million, four hundred forty-two thousand, four hundred twenty-three".