203431442144 has 48 divisors (see below), whose sum is σ = 457845696000. Its totient is φ = 87161103744.

The previous prime is 203431442143. The next prime is 203431442183. The reversal of 203431442144 is 441244134302.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 203431442144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203431442143) 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 7 ways as a sum of consecutive naturals, for example, 710957 + ... + 955155.

It is an arithmetic number, because the mean of its divisors is an integer number (9538452000).

Almost surely, 2^203431442144 is an apocalyptic number.

It is an amenable number.

203431442144 is an abundant number, since it is smaller than the sum of its proper divisors (254414253856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203431442144 is a wasteful number, since it uses less digits than its factorization.

203431442144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247935 (or 247927 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 203431442144 its reverse (441244134302), we get a palindrome (644675576446).

The spelling of 203431442144 in words is "two hundred three billion, four hundred thirty-one million, four hundred forty-two thousand, one hundred forty-four".