12981233 has 2 divisors, whose sum is σ = 12981234. Its totient is φ = 12981232.

The previous prime is 12981211. The next prime is 12981253. The reversal of 12981233 is 33218921.

12981233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11607649 + 1373584 = 3407^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 12981233 - 2⁶ = 12981169 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12981196 and 12981205.

It is not a weakly prime, because it can be changed into another prime (12981203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6490616 + 6490617.

It is an arithmetic number, because the mean of its divisors is an integer number (6490617).

Almost surely, 2^12981233 is an apocalyptic number.

It is an amenable number.

12981233 is a deficient number, since it is larger than the sum of its proper divisors (1).

12981233 is an equidigital number, since it uses as much as digits as its factorization.

12981233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 12981233 is about 3602.9478208822. The cubic root of 12981233 is about 235.0202668503.

The spelling of 12981233 in words is "twelve million, nine hundred eighty-one thousand, two hundred thirty-three".