203407235420 has 12 divisors (see below), whose sum is σ = 427155194424. Its totient is φ = 81362894160.

The previous prime is 203407235417. The next prime is 203407235443. The reversal of 203407235420 is 24532704302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5085180866 + ... + 5085180905.

It is an arithmetic number, because the mean of its divisors is an integer number (35596266202).

Almost surely, 2^203407235420 is an apocalyptic number.

203407235420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203407235420 is an abundant number, since it is smaller than the sum of its proper divisors (223747959004).

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

203407235420 is a wasteful number, since it uses less digits than its factorization.

203407235420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170361780 (or 10170361778 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 32.

Adding to 203407235420 its reverse (24532704302), we get a palindrome (227939939722).

The spelling of 203407235420 in words is "two hundred three billion, four hundred seven million, two hundred thirty-five thousand, four hundred twenty".