1203 has 4 divisors (see below), whose sum is σ = 1608. Its totient is φ = 800.

The previous prime is 1201. The next prime is 1213. The reversal of 1203 is 3021.

1203 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1203 - 2¹ = 1201 is a prime.

It is a D-number.

1203 is an undulating number in base 13.

1203 is a lucky number.

It is a plaindrome in base 7.

It is a nialpdrome in base 12 and base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1191 and 1200.

It is not an unprimeable number, because it can be changed into a prime (1201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198 + ... + 203.

It is an arithmetic number, because the mean of its divisors is an integer number (402).

1203 is a deficient number, since it is larger than the sum of its proper divisors (405).

1203 is an equidigital number, since it uses as much as digits as its factorization.

1203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404.

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 1203 is about 34.6842903920. The cubic root of 1203 is about 10.6354338106.

Adding to 1203 its reverse (3021), we get a palindrome (4224).

The spelling of 1203 in words is "one thousand, two hundred three", and thus it is an iban number.