203431100424 has 32 divisors (see below), whose sum is σ = 508840969920. Its totient is φ = 67775270976.

The previous prime is 203431100393. The next prime is 203431100441. The reversal of 203431100424 is 424001134302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 203431100394 and 203431100403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146132 + ... + 2238915.

It is an arithmetic number, because the mean of its divisors is an integer number (15901280310).

Almost surely, 2^203431100424 is an apocalyptic number.

203431100424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

203431100424 is an abundant number, since it is smaller than the sum of its proper divisors (305409869496).

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

203431100424 is a wasteful number, since it uses less digits than its factorization.

203431100424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4386989 (or 4386985 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 203431100424 its reverse (424001134302), we get a palindrome (627432234726).

The spelling of 203431100424 in words is "two hundred three billion, four hundred thirty-one million, one hundred thousand, four hundred twenty-four".