23282981 has 2 divisors, whose sum is σ = 23282982. Its totient is φ = 23282980.

The previous prime is 23282947. The next prime is 23283041. The reversal of 23282981 is 18928232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21473956 + 1809025 = 4634^2 + 1345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23282981 is a prime.

It is a super-2 number, since 2×23282981² = 1084194408492722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23282921) 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, 11641490 + 11641491.

It is an arithmetic number, because the mean of its divisors is an integer number (11641491).

Almost surely, 2^23282981 is an apocalyptic number.

It is an amenable number.

23282981 is a deficient number, since it is larger than the sum of its proper divisors (1).

23282981 is an equidigital number, since it uses as much as digits as its factorization.

23282981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 23282981 is about 4825.2441389012. The cubic root of 23282981 is about 285.5482664431.

The spelling of 23282981 in words is "twenty-three million, two hundred eighty-two thousand, nine hundred eighty-one".