12302581 has 2 divisors, whose sum is σ = 12302582. Its totient is φ = 12302580.

The previous prime is 12302569. The next prime is 12302593. The reversal of 12302581 is 18520321.

12302581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12302569) and next prime (12302593).

It can be written as a sum of positive squares in only one way, i.e., 9821956 + 2480625 = 3134^2 + 1575^2 .

It is an emirp because it is prime and its reverse (18520321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12302581 is a prime.

It is a super-2 number, since 2×12302581² = 302706998523122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12302531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6151290 + 6151291.

It is an arithmetic number, because the mean of its divisors is an integer number (6151291).

Almost surely, 2^12302581 is an apocalyptic number.

It is an amenable number.

12302581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12302581 is an equidigital number, since it uses as much as digits as its factorization.

12302581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12302581 is about 3507.5035281522. The cubic root of 12302581 is about 230.8511687864.

The spelling of 12302581 in words is "twelve million, three hundred two thousand, five hundred eighty-one".