12810013 has 2 divisors, whose sum is σ = 12810014. Its totient is φ = 12810012.

The previous prime is 12809987. The next prime is 12810023. The reversal of 12810013 is 31001821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9504889 + 3305124 = 3083^2 + 1818^2 .

It is a cyclic number.

It is not a de Polignac number, because 12810013 - 2¹³ = 12801821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12810023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6405006 + 6405007.

It is an arithmetic number, because the mean of its divisors is an integer number (6405007).

Almost surely, 2^12810013 is an apocalyptic number.

It is an amenable number.

12810013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12810013 is an equidigital number, since it uses as much as digits as its factorization.

12810013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 12810013 is about 3579.1078497302. The cubic root of 12810013 is about 233.9823993872.

Adding to 12810013 its reverse (31001821), we get a palindrome (43811834).

The spelling of 12810013 in words is "twelve million, eight hundred ten thousand, thirteen".