203311131102120 has 256 divisors, whose sum is σ = 647159103360000. Its totient is φ = 50953403344896.

The previous prime is 203311131102103. The next prime is 203311131102127. The reversal of 203311131102120 is 21201131113302.

It is not an unprimeable number, because it can be changed into a prime (203311131102127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 463010431 + ... + 463449329.

It is an arithmetic number, because the mean of its divisors is an integer number (2527965247500).

Almost surely, 2^{203311131102120} is an apocalyptic number.

203311131102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203311131102120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323579551680000).

203311131102120 is an abundant number, since it is smaller than the sum of its proper divisors (443847972257880).

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

203311131102120 is a wasteful number, since it uses less digits than its factorization.

203311131102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440552 (or 440548 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 203311131102120 its reverse (21201131113302), we get a palindrome (224512262215422).

The spelling of 203311131102120 in words is "two hundred three trillion, three hundred eleven billion, one hundred thirty-one million, one hundred two thousand, one hundred twenty".