203133123020 has 24 divisors (see below), whose sum is σ = 426769835184. Its totient is φ = 81217006016.

The previous prime is 203133123013. The next prime is 203133123043. The reversal of 203133123020 is 20321331302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 203133122983 and 203133123001.

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 7 ways as a sum of consecutive naturals, for example, 2219219 + ... + 2308938.

It is an arithmetic number, because the mean of its divisors is an integer number (17782076466).

Almost surely, 2^203133123020 is an apocalyptic number.

203133123020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203133123020 is an abundant number, since it is smaller than the sum of its proper divisors (223636712164).

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

203133123020 is a wasteful number, since it uses less digits than its factorization.

203133123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530409 (or 4530407 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203133123020 its reverse (20321331302), we get a palindrome (223454454322).

The spelling of 203133123020 in words is "two hundred three billion, one hundred thirty-three million, one hundred twenty-three thousand, twenty".