1215330013 has 2 divisors, whose sum is σ = 1215330014. Its totient is φ = 1215330012.

The previous prime is 1215330007. The next prime is 1215330037. The reversal of 1215330013 is 3100335121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1202563684 + 12766329 = 34678^2 + 3573^2 .

It is a cyclic number.

It is not a de Polignac number, because 1215330013 - 2²⁹ = 678459101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215330043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607665006 + 607665007.

It is an arithmetic number, because the mean of its divisors is an integer number (607665007).

Almost surely, 2^1215330013 is an apocalyptic number.

It is an amenable number.

1215330013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215330013 is an equidigital number, since it uses as much as digits as its factorization.

1215330013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1215330013 is about 34861.5836272537. The cubic root of 1215330013 is about 1067.1645933857.

Adding to 1215330013 its reverse (3100335121), we get a palindrome (4315665134).

The spelling of 1215330013 in words is "one billion, two hundred fifteen million, three hundred thirty thousand, thirteen".