203111133020 has 48 divisors (see below), whose sum is σ = 431423290368. Its totient is φ = 80317601280.

The previous prime is 203111133011. The next prime is 203111133041. The reversal of 203111133020 is 20331111302.

203111133020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 203111133020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571454 + ... + 856026.

It is an arithmetic number, because the mean of its divisors is an integer number (8987985216).

Almost surely, 2^203111133020 is an apocalyptic number.

203111133020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203111133020 is an abundant number, since it is smaller than the sum of its proper divisors (228312157348).

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

203111133020 is a wasteful number, since it uses less digits than its factorization.

203111133020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284990 (or 284988 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 203111133020 its reverse (20331111302), we get a palindrome (223442244322).

The spelling of 203111133020 in words is "two hundred three billion, one hundred eleven million, one hundred thirty-three thousand, twenty".