123220023 has 16 divisors (see below), whose sum is σ = 166561920. Its totient is φ = 81019616.

The previous prime is 123219977. The next prime is 123220051. The reversal of 123220023 is 320022321.

It is a cyclic number.

It is not a de Polignac number, because 123220023 - 2⁹ = 123219511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123219984 and 123220011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220723) 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 15 ways as a sum of consecutive naturals, for example, 85636 + ... + 87062.

It is an arithmetic number, because the mean of its divisors is an integer number (10410120).

Almost surely, 2^123220023 is an apocalyptic number.

123220023 is a deficient number, since it is larger than the sum of its proper divisors (43341897).

123220023 is a wasteful number, since it uses less digits than its factorization.

123220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 123220023 is about 11100.4514773049. The cubic root of 123220023 is about 497.6153422287.

Adding to 123220023 its reverse (320022321), we get a palindrome (443242344).

The spelling of 123220023 in words is "one hundred twenty-three million, two hundred twenty thousand, twenty-three".