203113323120 has 80 divisors (see below), whose sum is σ = 629803752480. Its totient is φ = 54150438912.

The previous prime is 203113323073. The next prime is 203113323187. The reversal of 203113323120 is 21323311302.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×203113323120³ (a number of 35 digits) contains 333 as substring.

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, 911736 + ... + 1112424.

It is an arithmetic number, because the mean of its divisors is an integer number (7872546906).

Almost surely, 2^203113323120 is an apocalyptic number.

203113323120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203113323120 is an abundant number, since it is smaller than the sum of its proper divisors (426690429360).

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

203113323120 is a wasteful number, since it uses less digits than its factorization.

203113323120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204922 (or 204916 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 203113323120 its reverse (21323311302), we get a palindrome (224436634422).

The spelling of 203113323120 in words is "two hundred three billion, one hundred thirteen million, three hundred twenty-three thousand, one hundred twenty".