1320211303 has 4 divisors (see below), whose sum is σ = 1322625400. Its totient is φ = 1317797208.

The previous prime is 1320211237. The next prime is 1320211309. The reversal of 1320211303 is 3031120231.

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 1320211303 - 2¹³ = 1320203111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320211309) 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, 1206228 + ... + 1207321.

It is an arithmetic number, because the mean of its divisors is an integer number (330656350).

Almost surely, 2^1320211303 is an apocalyptic number.

1320211303 is a deficient number, since it is larger than the sum of its proper divisors (2414097).

1320211303 is an equidigital number, since it uses as much as digits as its factorization.

1320211303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414096.

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

The square root of 1320211303 is about 36334.7120946348. The cubic root of 1320211303 is about 1097.0198404988.

Adding to 1320211303 its reverse (3031120231), we get a palindrome (4351331534).

The spelling of 1320211303 in words is "one billion, three hundred twenty million, two hundred eleven thousand, three hundred three".