203431431140 has 72 divisors (see below), whose sum is σ = 497050630272. Its totient is φ = 69734347200.

The previous prime is 203431431131. The next prime is 203431431163. The reversal of 203431431140 is 41134134302.

It is a happy number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5904965 + ... + 5939315.

It is an arithmetic number, because the mean of its divisors is an integer number (6903480976).

Almost surely, 2^203431431140 is an apocalyptic number.

203431431140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203431431140 is an abundant number, since it is smaller than the sum of its proper divisors (293619199132).

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

203431431140 is a wasteful number, since it uses less digits than its factorization.

203431431140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40417 (or 40408 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 203431431140 its reverse (41134134302), we get a palindrome (244565565442).

The spelling of 203431431140 in words is "two hundred three billion, four hundred thirty-one million, four hundred thirty-one thousand, one hundred forty".