123533123 has 16 divisors (see below), whose sum is σ = 145076736. Its totient is φ = 102980160.

The previous prime is 123533119. The next prime is 123533129. The reversal of 123533123 is 321335321.

It is a cyclic number.

It is not a de Polignac number, because 123533123 - 2² = 123533119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123533129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149690 + ... + 150512.

It is an arithmetic number, because the mean of its divisors is an integer number (9067296).

Almost surely, 2^123533123 is an apocalyptic number.

123533123 is a deficient number, since it is larger than the sum of its proper divisors (21543613).

123533123 is an equidigital number, since it uses as much as digits as its factorization.

123533123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394.

The product of its digits is 1620, while the sum is 23.

The square root of 123533123 is about 11114.5455597609. The cubic root of 123533123 is about 498.0364631398.

Adding to 123533123 its reverse (321335321), we get a palindrome (444868444).

The spelling of 123533123 in words is "one hundred twenty-three million, five hundred thirty-three thousand, one hundred twenty-three".