1313516213 has 2 divisors, whose sum is σ = 1313516214. Its totient is φ = 1313516212.

The previous prime is 1313516207. The next prime is 1313516219. The reversal of 1313516213 is 3126153131.

It is a balanced prime because it is at equal distance from previous prime (1313516207) and next prime (1313516219).

It can be written as a sum of positive squares in only one way, i.e., 1143657124 + 169859089 = 33818^2 + 13033^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313516213 - 2³⁰ = 239774389 is a prime.

It is a super-2 number, since 2×1313516213² = 3450649683627722738, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313516219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656758106 + 656758107.

It is an arithmetic number, because the mean of its divisors is an integer number (656758107).

Almost surely, 2^1313516213 is an apocalyptic number.

It is an amenable number.

1313516213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313516213 is an equidigital number, since it uses as much as digits as its factorization.

1313516213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 26.

The square root of 1313516213 is about 36242.4642236148. The cubic root of 1313516213 is about 1095.1622850456.

Adding to 1313516213 its reverse (3126153131), we get a palindrome (4439669344).

The spelling of 1313516213 in words is "one billion, three hundred thirteen million, five hundred sixteen thousand, two hundred thirteen".