123332281 has 2 divisors, whose sum is σ = 123332282. Its totient is φ = 123332280.

The previous prime is 123332267. The next prime is 123332309. The reversal of 123332281 is 182233321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67322025 + 56010256 = 8205^2 + 7484^2 .

It is an emirp because it is prime and its reverse (182233321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123332281 is a prime.

It is a super-2 number, since 2×123332281² = 30421703073325922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123332201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61666140 + 61666141.

It is an arithmetic number, because the mean of its divisors is an integer number (61666141).

Almost surely, 2^123332281 is an apocalyptic number.

It is an amenable number.

123332281 is a deficient number, since it is larger than the sum of its proper divisors (1).

123332281 is an equidigital number, since it uses as much as digits as its factorization.

123332281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 123332281 is about 11105.5067871755. The cubic root of 123332281 is about 497.7664116908.

The spelling of 123332281 in words is "one hundred twenty-three million, three hundred thirty-two thousand, two hundred eighty-one".