1216475303 has 4 divisors (see below), whose sum is σ = 1220085360. Its totient is φ = 1212865248.

The previous prime is 1216475231. The next prime is 1216475317. The reversal of 1216475303 is 3035746121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1216475303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1216475303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216475353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1804523 + ... + 1805196.

It is an arithmetic number, because the mean of its divisors is an integer number (305021340).

Almost surely, 2^1216475303 is an apocalyptic number.

1216475303 is a deficient number, since it is larger than the sum of its proper divisors (3610057).

1216475303 is an equidigital number, since it uses as much as digits as its factorization.

1216475303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610056.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1216475303 is about 34878.0060066512. The cubic root of 1216475303 is about 1067.4997092800.

The spelling of 1216475303 in words is "one billion, two hundred sixteen million, four hundred seventy-five thousand, three hundred three".