203144342223 has 4 divisors (see below), whose sum is σ = 270859122968. Its totient is φ = 135429561480.

The previous prime is 203144342197. The next prime is 203144342231. The reversal of 203144342223 is 322243441302.

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

It is a de Polignac number, because none of the positive numbers 2^k-203144342223 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 (203144342263) 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, 33857390368 + ... + 33857390373.

It is an arithmetic number, because the mean of its divisors is an integer number (67714780742).

Almost surely, 2^203144342223 is an apocalyptic number.

203144342223 is a deficient number, since it is larger than the sum of its proper divisors (67714780745).

203144342223 is an equidigital number, since it uses as much as digits as its factorization.

203144342223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67714780744.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 203144342223 its reverse (322243441302), we get a palindrome (525387783525).

It can be divided in two parts, 2031443 and 42223, that added together give a triangular number (2073666 = T₂₀₃₆).

The spelling of 203144342223 in words is "two hundred three billion, one hundred forty-four million, three hundred forty-two thousand, two hundred twenty-three".