1312203 has 4 divisors (see below), whose sum is σ = 1749608. Its totient is φ = 874800.

The previous prime is 1312189. The next prime is 1312211. The reversal of 1312203 is 3022131.

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 1312203 - 2⁴ = 1312187 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 (1312303) 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, 218698 + ... + 218703.

It is an arithmetic number, because the mean of its divisors is an integer number (437402).

2^1312203 is an apocalyptic number.

1312203 is a deficient number, since it is larger than the sum of its proper divisors (437405).

1312203 is an equidigital number, since it uses as much as digits as its factorization.

1312203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437404.

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

The square root of 1312203 is about 1145.5142949785. The cubic root of 1312203 is about 109.4797193524.

Adding to 1312203 its reverse (3022131), we get a palindrome (4334334).

The spelling of 1312203 in words is "one million, three hundred twelve thousand, two hundred three".