1213331303 has 2 divisors, whose sum is σ = 1213331304. Its totient is φ = 1213331302.

The previous prime is 1213331299. The next prime is 1213331311. The reversal of 1213331303 is 3031333121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213331303 - 2² = 1213331299 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213331323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606665651 + 606665652.

It is an arithmetic number, because the mean of its divisors is an integer number (606665652).

Almost surely, 2^1213331303 is an apocalyptic number.

1213331303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213331303 is an equidigital number, since it uses as much as digits as its factorization.

1213331303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1213331303 is about 34832.9054630819. The cubic root of 1213331303 is about 1066.5792591245.

Adding to 1213331303 its reverse (3031333121), we get a palindrome (4244664424).

The spelling of 1213331303 in words is "one billion, two hundred thirteen million, three hundred thirty-one thousand, three hundred three".