12035981 has 2 divisors, whose sum is σ = 12035982. Its totient is φ = 12035980.

The previous prime is 12035953. The next prime is 12035999. The reversal of 12035981 is 18953021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8213956 + 3822025 = 2866^2 + 1955^2 .

It is an emirp because it is prime and its reverse (18953021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12035981 - 2¹⁴ = 12019597 is a prime.

It is a super-2 number, since 2×12035981² = 289729677264722, 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 (12035921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6017990 + 6017991.

It is an arithmetic number, because the mean of its divisors is an integer number (6017991).

Almost surely, 2^12035981 is an apocalyptic number.

It is an amenable number.

12035981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12035981 is an equidigital number, since it uses as much as digits as its factorization.

12035981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 12035981 is about 3469.2911379704. The cubic root of 12035981 is about 229.1714422072.

The spelling of 12035981 in words is "twelve million, thirty-five thousand, nine hundred eighty-one".