23981863 has 2 divisors, whose sum is σ = 23981864. Its totient is φ = 23981862.

The previous prime is 23981827. The next prime is 23981897. The reversal of 23981863 is 36818932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23981863 - 2¹⁷ = 23850791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23981813) 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, 11990931 + 11990932.

It is an arithmetic number, because the mean of its divisors is an integer number (11990932).

Almost surely, 2^23981863 is an apocalyptic number.

23981863 is a deficient number, since it is larger than the sum of its proper divisors (1).

23981863 is an equidigital number, since it uses as much as digits as its factorization.

23981863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 23981863 is about 4897.1280359002. The cubic root of 23981863 is about 288.3772344156.

The spelling of 23981863 in words is "twenty-three million, nine hundred eighty-one thousand, eight hundred sixty-three".