12385481 has 2 divisors, whose sum is σ = 12385482. Its totient is φ = 12385480.

The previous prime is 12385463. The next prime is 12385493. The reversal of 12385481 is 18458321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 1229881 = 3340^2 + 1109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12385481 is a prime.

It is a super-2 number, since 2×12385481² = 306800279202722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12385081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6192740 + 6192741.

It is an arithmetic number, because the mean of its divisors is an integer number (6192741).

Almost surely, 2^12385481 is an apocalyptic number.

It is an amenable number.

12385481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12385481 is an equidigital number, since it uses as much as digits as its factorization.

12385481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The square root of 12385481 is about 3519.3012090470. The cubic root of 12385481 is about 231.3685327561.

The spelling of 12385481 in words is "twelve million, three hundred eighty-five thousand, four hundred eighty-one".