13233281 has 2 divisors, whose sum is σ = 13233282. Its totient is φ = 13233280.

The previous prime is 13233263. The next prime is 13233307. The reversal of 13233281 is 18233231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13104400 + 128881 = 3620^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 13233281 - 2¹⁸ = 12971137 is a prime.

It is a super-2 number, since 2×13233281² = 350239452049922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13223281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6616640 + 6616641.

It is an arithmetic number, because the mean of its divisors is an integer number (6616641).

Almost surely, 2^13233281 is an apocalyptic number.

It is an amenable number.

13233281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13233281 is an equidigital number, since it uses as much as digits as its factorization.

13233281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 13233281 is about 3637.7576884669. The cubic root of 13233281 is about 236.5316047020.

The spelling of 13233281 in words is "thirteen million, two hundred thirty-three thousand, two hundred eighty-one".