23280563 has 2 divisors, whose sum is σ = 23280564. Its totient is φ = 23280562.

The previous prime is 23280559. The next prime is 23280571. The reversal of 23280563 is 36508232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23280563 - 2² = 23280559 is a prime.

It is a super-2 number, since 2×23280563² = 1083969227193938, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (23280553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11640281 + 11640282.

It is an arithmetic number, because the mean of its divisors is an integer number (11640282).

Almost surely, 2^23280563 is an apocalyptic number.

23280563 is a deficient number, since it is larger than the sum of its proper divisors (1).

23280563 is an equidigital number, since it uses as much as digits as its factorization.

23280563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 23280563 is about 4824.9935751253. The cubic root of 23280563 is about 285.5383811166.

Adding to 23280563 its reverse (36508232), we get a palindrome (59788795).

The spelling of 23280563 in words is "twenty-three million, two hundred eighty thousand, five hundred sixty-three".