203431420 has 24 divisors (see below), whose sum is σ = 427568400. Its totient is φ = 81303552.

The previous prime is 203431411. The next prime is 203431421. The reversal of 203431420 is 24134302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203431421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24571 + ... + 31789.

It is an arithmetic number, because the mean of its divisors is an integer number (17815350).

Almost surely, 2^203431420 is an apocalyptic number.

203431420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203431420 is an abundant number, since it is smaller than the sum of its proper divisors (224136980).

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

203431420 is a wasteful number, since it uses less digits than its factorization.

203431420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8637 (or 8635 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 203431420 is about 14262.9386873814. The cubic root of 203431420 is about 588.1291115125.

Adding to 203431420 its reverse (24134302), we get a palindrome (227565722).

The spelling of 203431420 in words is "two hundred three million, four hundred thirty-one thousand, four hundred twenty".