1213000003 has 2 divisors, whose sum is σ = 1213000004. Its totient is φ = 1213000002.

The previous prime is 1212999979. The next prime is 1213000021. The reversal of 1213000003 is 3000003121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213000003 - 2¹³ = 1212991811 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213000403) 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 as a sum of consecutive naturals, namely, 606500001 + 606500002.

It is an arithmetic number, because the mean of its divisors is an integer number (606500002).

Almost surely, 2^1213000003 is an apocalyptic number.

1213000003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213000003 is an equidigital number, since it uses as much as digits as its factorization.

1213000003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1213000003 is about 34828.1495776046. The cubic root of 1213000003 is about 1066.4821738316.

Adding to 1213000003 its reverse (3000003121), we get a palindrome (4213003124).

It can be divided in two parts, 121 and 3000003, that multiplied together give a palindrome (363000363).

The spelling of 1213000003 in words is "one billion, two hundred thirteen million, three", and thus it is an aban number.