203103120120 has 128 divisors (see below), whose sum is σ = 673201290240. Its totient is φ = 48758589440.

The previous prime is 203103120091. The next prime is 203103120131. The reversal of 203103120120 is 21021301302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 203103120120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2117436 + ... + 2211275.

It is an arithmetic number, because the mean of its divisors is an integer number (5259385080).

Almost surely, 2^203103120120 is an apocalyptic number.

203103120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203103120120 is an abundant number, since it is smaller than the sum of its proper divisors (470098170120).

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

203103120120 is a wasteful number, since it uses less digits than its factorization.

203103120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328765 (or 4328761 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 203103120120 its reverse (21021301302), we get a palindrome (224124421422).

The spelling of 203103120120 in words is "two hundred three billion, one hundred three million, one hundred twenty thousand, one hundred twenty".