1003321213 has 2 divisors, whose sum is σ = 1003321214. Its totient is φ = 1003321212.

The previous prime is 1003321171. The next prime is 1003321223. The reversal of 1003321213 is 3121233001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 948516804 + 54804409 = 30798^2 + 7403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003321213 - 2¹⁷ = 1003190141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1003321223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501660606 + 501660607.

It is an arithmetic number, because the mean of its divisors is an integer number (501660607).

Almost surely, 2^1003321213 is an apocalyptic number.

It is an amenable number.

1003321213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003321213 is an equidigital number, since it uses as much as digits as its factorization.

1003321213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1003321213 is about 31675.2460606070. The cubic root of 1003321213 is about 1001.1058476502.

Adding to 1003321213 its reverse (3121233001), we get a palindrome (4124554214).

The spelling of 1003321213 in words is "one billion, three million, three hundred twenty-one thousand, two hundred thirteen".