1203313 has 4 divisors (see below), whose sum is σ = 1208548. Its totient is φ = 1198080.

The previous prime is 1203287. The next prime is 1203329. The reversal of 1203313 is 3133021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3133021 = 61 ⋅51361.

It can be written as a sum of positive squares in 2 ways, for example, as 667489 + 535824 = 817^2 + 732^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203313 - 2¹³ = 1195121 is a prime.

It is a Duffinian number.

1203313 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1203293 and 1203302.

It is not an unprimeable number, because it can be changed into a prime (1203343) 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, 2256 + ... + 2737.

It is an arithmetic number, because the mean of its divisors is an integer number (302137).

2^1203313 is an apocalyptic number.

It is an amenable number.

1203313 is a deficient number, since it is larger than the sum of its proper divisors (5235).

1203313 is an equidigital number, since it uses as much as digits as its factorization.

1203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 1203313 is about 1096.9562434300. The cubic root of 1203313 is about 106.3635611650.

Adding to 1203313 its reverse (3133021), we get a palindrome (4336334).

The spelling of 1203313 in words is "one million, two hundred three thousand, three hundred thirteen".