203142332423 has 4 divisors (see below), whose sum is σ = 205589830488. Its totient is φ = 200694834360.

The previous prime is 203142332401. The next prime is 203142332453. The reversal of 203142332423 is 324233241302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203142332423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203142332453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223748908 + ... + 1223749073.

It is an arithmetic number, because the mean of its divisors is an integer number (51397457622).

Almost surely, 2^203142332423 is an apocalyptic number.

203142332423 is a deficient number, since it is larger than the sum of its proper divisors (2447498065).

203142332423 is an equidigital number, since it uses as much as digits as its factorization.

203142332423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447498064.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 203142332423 its reverse (324233241302), we get a palindrome (527375573725).

The spelling of 203142332423 in words is "two hundred three billion, one hundred forty-two million, three hundred thirty-two thousand, four hundred twenty-three".