1203113 has 4 divisors (see below), whose sum is σ = 1219668. Its totient is φ = 1186560.

The previous prime is 1203101. The next prime is 1203121. The reversal of 1203113 is 3113021.

1203113 is nontrivially palindromic in base 9.

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

It can be written as a sum of positive squares in 2 ways, for example, as 582169 + 620944 = 763^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203113 - 2⁸ = 1202857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 1203094 and 1203103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8168 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (304917).

2^1203113 is an apocalyptic number.

It is an amenable number.

1203113 is a deficient number, since it is larger than the sum of its proper divisors (16555).

1203113 is an equidigital number, since it uses as much as digits as its factorization.

1203113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16554.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1203113 is about 1096.8650783027. The cubic root of 1203113 is about 106.3576680208.

Adding to 1203113 its reverse (3113021), we get a palindrome (4316134).

The spelling of 1203113 in words is "one million, two hundred three thousand, one hundred thirteen".