23018923 has 2 divisors, whose sum is σ = 23018924. Its totient is φ = 23018922.

The previous prime is 23018887. The next prime is 23018987. The reversal of 23018923 is 32981032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23018923 - 2¹³ = 23010731 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23018891 and 23018900.

It is not a weakly prime, because it can be changed into another prime (23018123) 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, 11509461 + 11509462.

It is an arithmetic number, because the mean of its divisors is an integer number (11509462).

Almost surely, 2^23018923 is an apocalyptic number.

23018923 is a deficient number, since it is larger than the sum of its proper divisors (1).

23018923 is an equidigital number, since it uses as much as digits as its factorization.

23018923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 23018923 is about 4797.8039768211. The cubic root of 23018923 is about 284.4646686274.

Adding to 23018923 its reverse (32981032), we get a palindrome (55999955).

The spelling of 23018923 in words is "twenty-three million, eighteen thousand, nine hundred twenty-three".