1213213303 has 8 divisors (see below), whose sum is σ = 1278996480. Its totient is φ = 1149095640.

The previous prime is 1213213249. The next prime is 1213213319. The reversal of 1213213303 is 3033123121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213213303 - 2²⁹ = 676342391 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 (1213213343) 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 7 ways as a sum of consecutive naturals, for example, 414883 + ... + 417796.

It is an arithmetic number, because the mean of its divisors is an integer number (159874560).

Almost surely, 2^1213213303 is an apocalyptic number.

1213213303 is a deficient number, since it is larger than the sum of its proper divisors (65783177).

1213213303 is an equidigital number, since it uses as much as digits as its factorization.

1213213303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832757.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1213213303 is about 34831.2116211883. The cubic root of 1213213303 is about 1066.5446820247.

Adding to 1213213303 its reverse (3033123121), we get a palindrome (4246336424).

The spelling of 1213213303 in words is "one billion, two hundred thirteen million, two hundred thirteen thousand, three hundred three".