1320320203 has 16 divisors (see below), whose sum is σ = 1430795520. Its totient is φ = 1214299296.

The previous prime is 1320320167. The next prime is 1320320213. The reversal of 1320320203 is 3020230231.

It is a cyclic number.

It is not a de Polignac number, because 1320320203 - 2¹³ = 1320312011 is a prime.

It is a super-2 number, since 2×1320320203² = 3486490876899922418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320320213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131601 + ... + 141277.

It is an arithmetic number, because the mean of its divisors is an integer number (89424720).

Almost surely, 2^1320320203 is an apocalyptic number.

1320320203 is a deficient number, since it is larger than the sum of its proper divisors (110475317).

1320320203 is a wasteful number, since it uses less digits than its factorization.

1320320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9906.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1320320203 is about 36336.2106307193. The cubic root of 1320320203 is about 1097.0500028866.

Adding to 1320320203 its reverse (3020230231), we get a palindrome (4340550434).

The spelling of 1320320203 in words is "one billion, three hundred twenty million, three hundred twenty thousand, two hundred three".