1310203 has 4 divisors (see below), whose sum is σ = 1314040. Its totient is φ = 1306368.

The previous prime is 1310189. The next prime is 1310209. The reversal of 1310203 is 3020131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020131 = 277 ⋅10903.

It is a cyclic number.

It is not a de Polignac number, because 1310203 - 2⁵ = 1310171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1310203.

It is not an unprimeable number, because it can be changed into a prime (1310209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350 + ... + 2107.

It is an arithmetic number, because the mean of its divisors is an integer number (328510).

2^1310203 is an apocalyptic number.

1310203 is a deficient number, since it is larger than the sum of its proper divisors (3837).

1310203 is an equidigital number, since it uses as much as digits as its factorization.

1310203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1310203 is about 1144.6409917524. The cubic root of 1310203 is about 109.4240697373.

Adding to 1310203 its reverse (3020131), we get a palindrome (4330334).

The spelling of 1310203 in words is "one million, three hundred ten thousand, two hundred three".