123011423 has 8 divisors (see below), whose sum is σ = 124500768. Its totient is φ = 121526784.

The previous prime is 123011411. The next prime is 123011437. The reversal of 123011423 is 324110321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123011423 - 2⁴ = 123011407 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 (123011443) 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, 102515 + ... + 103707.

It is an arithmetic number, because the mean of its divisors is an integer number (15562596).

Almost surely, 2^123011423 is an apocalyptic number.

123011423 is a deficient number, since it is larger than the sum of its proper divisors (1489345).

123011423 is a wasteful number, since it uses less digits than its factorization.

123011423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 123011423 is about 11091.0514830651. The cubic root of 123011423 is about 497.3343781748.

Adding to 123011423 its reverse (324110321), we get a palindrome (447121744).

The spelling of 123011423 in words is "one hundred twenty-three million, eleven thousand, four hundred twenty-three".