12397513 has 2 divisors, whose sum is σ = 12397514. Its totient is φ = 12397512.

The previous prime is 12397499. The next prime is 12397537. The reversal of 12397513 is 31579321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12369289 + 28224 = 3517^2 + 168^2 .

It is an emirp because it is prime and its reverse (31579321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12397513 is a prime.

It is not a weakly prime, because it can be changed into another prime (12397313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6198756 + 6198757.

It is an arithmetic number, because the mean of its divisors is an integer number (6198757).

Almost surely, 2^12397513 is an apocalyptic number.

It is an amenable number.

12397513 is a deficient number, since it is larger than the sum of its proper divisors (1).

12397513 is an equidigital number, since it uses as much as digits as its factorization.

12397513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 31.

The square root of 12397513 is about 3521.0102243532. The cubic root of 12397513 is about 231.4434302702.

The spelling of 12397513 in words is "twelve million, three hundred ninety-seven thousand, five hundred thirteen".