203032400020 has 24 divisors (see below), whose sum is σ = 431765107200. Its totient is φ = 80184947232.

The previous prime is 203032400017. The next prime is 203032400023. The reversal of 203032400020 is 20004230302.

It is an interprime number because it is at equal distance from previous prime (203032400017) and next prime (203032400023).

It is a junction number, because it is equal to n+sod(n) for n = 203032399967 and 203032400003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203032400023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 64249180 + ... + 64252339.

It is an arithmetic number, because the mean of its divisors is an integer number (17990212800).

Almost surely, 2^203032400020 is an apocalyptic number.

203032400020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203032400020 is an abundant number, since it is smaller than the sum of its proper divisors (228732707180).

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

203032400020 is a wasteful number, since it uses less digits than its factorization.

203032400020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128501607 (or 128501605 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 203032400020 its reverse (20004230302), we get a palindrome (223036630322).

The spelling of 203032400020 in words is "two hundred three billion, thirty-two million, four hundred thousand, twenty".