22383281 has 2 divisors, whose sum is σ = 22383282. Its totient is φ = 22383280.

The previous prime is 22383269. The next prime is 22383287. The reversal of 22383281 is 18238322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18447025 + 3936256 = 4295^2 + 1984^2 .

It is a cyclic number.

It is not a de Polignac number, because 22383281 - 2¹⁸ = 22121137 is a prime.

It is a super-2 number, since 2×22383281² = 1002022536649922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22383287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11191640 + 11191641.

It is an arithmetic number, because the mean of its divisors is an integer number (11191641).

Almost surely, 2^22383281 is an apocalyptic number.

It is an amenable number.

22383281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22383281 is an equidigital number, since it uses as much as digits as its factorization.

22383281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 22383281 is about 4731.0972300303. The cubic root of 22383281 is about 281.8217986197.

The spelling of 22383281 in words is "twenty-two million, three hundred eighty-three thousand, two hundred eighty-one".