23978023 has 2 divisors, whose sum is σ = 23978024. Its totient is φ = 23978022.

The previous prime is 23978021. The next prime is 23978033. The reversal of 23978023 is 32087932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23978023 - 2¹ = 23978021 is a prime.

Together with 23978021, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23978023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23978021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11989011 + 11989012.

It is an arithmetic number, because the mean of its divisors is an integer number (11989012).

Almost surely, 2^23978023 is an apocalyptic number.

23978023 is a deficient number, since it is larger than the sum of its proper divisors (1).

23978023 is an equidigital number, since it uses as much as digits as its factorization.

23978023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 23978023 is about 4896.7359536736. The cubic root of 23978023 is about 288.3618418432.

The spelling of 23978023 in words is "twenty-three million, nine hundred seventy-eight thousand, twenty-three".