12326981 has 2 divisors, whose sum is σ = 12326982. Its totient is φ = 12326980.

The previous prime is 12326959. The next prime is 12326987. The reversal of 12326981 is 18962321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11498881 + 828100 = 3391^2 + 910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12326981 is a prime.

It is a super-2 number, since 2×12326981² = 303908921148722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12326987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6163490 + 6163491.

It is an arithmetic number, because the mean of its divisors is an integer number (6163491).

Almost surely, 2^12326981 is an apocalyptic number.

It is an amenable number.

12326981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12326981 is an equidigital number, since it uses as much as digits as its factorization.

12326981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 12326981 is about 3510.9800626036. The cubic root of 12326981 is about 231.0036855293.

The spelling of 12326981 in words is "twelve million, three hundred twenty-six thousand, nine hundred eighty-one".