1320113203 has 4 divisors (see below), whose sum is σ = 1352311128. Its totient is φ = 1287915280.

The previous prime is 1320113177. The next prime is 1320113227. The reversal of 1320113203 is 3023110231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320113203 - 2²⁵ = 1286558771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320113233) 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, 16098901 + ... + 16098982.

It is an arithmetic number, because the mean of its divisors is an integer number (338077782).

Almost surely, 2^1320113203 is an apocalyptic number.

1320113203 is a deficient number, since it is larger than the sum of its proper divisors (32197925).

1320113203 is an equidigital number, since it uses as much as digits as its factorization.

1320113203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32197924.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1320113203 is about 36333.3621207837. The cubic root of 1320113203 is about 1096.9926680021.

Adding to 1320113203 its reverse (3023110231), we get a palindrome (4343223434).

The spelling of 1320113203 in words is "one billion, three hundred twenty million, one hundred thirteen thousand, two hundred three".