1231203 has 4 divisors (see below), whose sum is σ = 1641608. Its totient is φ = 820800.

The previous prime is 1231201. The next prime is 1231207. The reversal of 1231203 is 3021321.

It is a happy number.

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

It is not a de Polignac number, because 1231203 - 2¹ = 1231201 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231201) 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, 205198 + ... + 205203.

It is an arithmetic number, because the mean of its divisors is an integer number (410402).

2^1231203 is an apocalyptic number.

1231203 is a deficient number, since it is larger than the sum of its proper divisors (410405).

1231203 is an equidigital number, since it uses as much as digits as its factorization.

1231203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410404.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1231203 is about 1109.5958723788. The cubic root of 1231203 is about 107.1790463148.

Adding to 1231203 its reverse (3021321), we get a palindrome (4252524).

It can be divided in two parts, 123 and 1203, that added together give a triangular number (1326 = T₅₁).

The spelling of 1231203 in words is "one million, two hundred thirty-one thousand, two hundred three".