23793281 has 2 divisors, whose sum is σ = 23793282. Its totient is φ = 23793280.

The previous prime is 23793239. The next prime is 23793313. The reversal of 23793281 is 18239732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23280625 + 512656 = 4825^2 + 716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23793281 is a prime.

It is a super-2 number, since 2×23793281² = 1132240441489922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23793181) 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, 11896640 + 11896641.

It is an arithmetic number, because the mean of its divisors is an integer number (11896641).

Almost surely, 2^23793281 is an apocalyptic number.

It is an amenable number.

23793281 is a deficient number, since it is larger than the sum of its proper divisors (1).

23793281 is an equidigital number, since it uses as much as digits as its factorization.

23793281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 23793281 is about 4877.8356880895. The cubic root of 23793281 is about 287.6193571207.

The spelling of 23793281 in words is "twenty-three million, seven hundred ninety-three thousand, two hundred eighty-one".