123023111 has 4 divisors (see below), whose sum is σ = 125640672. Its totient is φ = 120405552.

The previous prime is 123023107. The next prime is 123023137. The reversal of 123023111 is 111320321.

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 123023111 - 2² = 123023107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308710 + ... + 1308803.

It is an arithmetic number, because the mean of its divisors is an integer number (31410168).

Almost surely, 2^123023111 is an apocalyptic number.

123023111 is a deficient number, since it is larger than the sum of its proper divisors (2617561).

123023111 is an equidigital number, since it uses as much as digits as its factorization.

123023111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617560.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 123023111 is about 11091.5783818174. The cubic root of 123023111 is about 497.3501291785.

Adding to 123023111 its reverse (111320321), we get a palindrome (234343432).

The spelling of 123023111 in words is "one hundred twenty-three million, twenty-three thousand, one hundred eleven".