23021123 has 4 divisors (see below), whose sum is σ = 23044320. Its totient is φ = 22997928.

The previous prime is 23021101. The next prime is 23021147. The reversal of 23021123 is 32112032.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23021123 - 2⁶ = 23021059 is a prime.

It is a super-2 number, since 2×23021123² = 1059944208362258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23021098 and 23021107.

It is not an unprimeable number, because it can be changed into a prime (23021423) 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, 10040 + ... + 12117.

It is an arithmetic number, because the mean of its divisors is an integer number (5761080).

Almost surely, 2^23021123 is an apocalyptic number.

23021123 is a deficient number, since it is larger than the sum of its proper divisors (23197).

23021123 is a wasteful number, since it uses less digits than its factorization.

23021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23196.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23021123 is about 4798.0332429028. The cubic root of 23021123 is about 284.4737307707.

Adding to 23021123 its reverse (32112032), we get a palindrome (55133155).

Subtracting 23021123 from its reverse (32112032), we obtain a palindrome (9090909).

The spelling of 23021123 in words is "twenty-three million, twenty-one thousand, one hundred twenty-three".