16311220303 has 6 divisors (see below), whose sum is σ = 18974276736. Its totient is φ = 13981045932.

The previous prime is 16311220279. The next prime is 16311220313. The reversal of 16311220303 is 30302211361.

It is not a de Polignac number, because 16311220303 - 2⁵ = 16311220271 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 (16311220313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166440975 + ... + 166441072.

It is an arithmetic number, because the mean of its divisors is an integer number (3162379456).

Almost surely, 2^16311220303 is an apocalyptic number.

16311220303 is a deficient number, since it is larger than the sum of its proper divisors (2663056433).

16311220303 is an equidigital number, since it uses as much as digits as its factorization.

16311220303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332882061 (or 332882054 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 16311220303 its reverse (30302211361), we get a palindrome (46613431664).

The spelling of 16311220303 in words is "sixteen billion, three hundred eleven million, two hundred twenty thousand, three hundred three".