11310320203 has 16 divisors (see below), whose sum is σ = 13927291840. Its totient is φ = 8944390656.

The previous prime is 11310320191. The next prime is 11310320213. The reversal of 11310320203 is 30202301311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11310320203 is a prime.

It is a super-2 number, since 2×11310320203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11310320213) 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, 160351 + ... + 219847.

It is an arithmetic number, because the mean of its divisors is an integer number (870455740).

Almost surely, 2^11310320203 is an apocalyptic number.

11310320203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11310320203 is a deficient number, since it is larger than the sum of its proper divisors (2616971637).

11310320203 is a wasteful number, since it uses less digits than its factorization.

11310320203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61606.

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

Adding to 11310320203 its reverse (30202301311), we get a palindrome (41512621514).

The spelling of 11310320203 in words is "eleven billion, three hundred ten million, three hundred twenty thousand, two hundred three".