123211232023 has 4 divisors (see below), whose sum is σ = 134412253128. Its totient is φ = 112010210920.

The previous prime is 123211231963. The next prime is 123211232057. The reversal of 123211232023 is 320232112321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123211232023 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123211231985 and 123211232003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123211212023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5600510536 + ... + 5600510557.

It is an arithmetic number, because the mean of its divisors is an integer number (33603063282).

Almost surely, 2^123211232023 is an apocalyptic number.

123211232023 is a deficient number, since it is larger than the sum of its proper divisors (11201021105).

123211232023 is a wasteful number, since it uses less digits than its factorization.

123211232023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11201021104.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123211232023 its reverse (320232112321), we get a palindrome (443443344344).

The spelling of 123211232023 in words is "one hundred twenty-three billion, two hundred eleven million, two hundred thirty-two thousand, twenty-three".