123205023 has 8 divisors (see below), whose sum is σ = 182526000. Its totient is φ = 82136664.

The previous prime is 123204979. The next prime is 123205051. The reversal of 123205023 is 320502321.

It is not a de Polignac number, because 123205023 - 2¹² = 123200927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123204987 and 123205005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123205073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2281548 + ... + 2281601.

It is an arithmetic number, because the mean of its divisors is an integer number (22815750).

Almost surely, 2^123205023 is an apocalyptic number.

123205023 is a deficient number, since it is larger than the sum of its proper divisors (59320977).

123205023 is an equidigital number, since it uses as much as digits as its factorization.

123205023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563158 (or 4563152 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 123205023 is about 11099.7758085468. The cubic root of 123205023 is about 497.5951492632.

Adding to 123205023 its reverse (320502321), we get a palindrome (443707344).

The spelling of 123205023 in words is "one hundred twenty-three million, two hundred five thousand, twenty-three".