203120 has 20 divisors (see below), whose sum is σ = 472440. Its totient is φ = 81216.

The previous prime is 203117. The next prime is 203141. The reversal of 203120 is 21302.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 203098 and 203107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190 + ... + 1349.

It is an arithmetic number, because the mean of its divisors is an integer number (23622).

2²⁰³¹²⁰ is an apocalyptic number.

203120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203120 is an abundant number, since it is smaller than the sum of its proper divisors (269320).

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

203120 is a wasteful number, since it uses less digits than its factorization.

203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 203120 is about 450.6883623969. The cubic root of 203120 is about 58.7828848640.

Adding to 203120 its reverse (21302), we get a palindrome (224422).

It can be divided in two parts, 203 and 120, that added together give a palindrome (323).

The spelling of 203120 in words is "two hundred three thousand, one hundred twenty", and thus it is an iban number.