23012643 has 4 divisors (see below), whose sum is σ = 30683528. Its totient is φ = 15341760.

The previous prime is 23012623. The next prime is 23012687. The reversal of 23012643 is 34621032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23012643 - 2⁸ = 23012387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23012623) 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 in 3 ways as a sum of consecutive naturals, for example, 3835438 + ... + 3835443.

It is an arithmetic number, because the mean of its divisors is an integer number (7670882).

Almost surely, 2^23012643 is an apocalyptic number.

23012643 is a deficient number, since it is larger than the sum of its proper divisors (7670885).

23012643 is an equidigital number, since it uses as much as digits as its factorization.

23012643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7670884.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 23012643 is about 4797.1494660892. The cubic root of 23012643 is about 284.4387971506.

Adding to 23012643 its reverse (34621032), we get a palindrome (57633675).

The spelling of 23012643 in words is "twenty-three million, twelve thousand, six hundred forty-three".