123423822523 has 4 divisors (see below), whose sum is σ = 124556151280. Its totient is φ = 122291493768.

The previous prime is 123423822497. The next prime is 123423822527. The reversal of 123423822523 is 325228324321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123423822523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123423822527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566164215 + ... + 566164432.

It is an arithmetic number, because the mean of its divisors is an integer number (31139037820).

Almost surely, 2^123423822523 is an apocalyptic number.

123423822523 is a deficient number, since it is larger than the sum of its proper divisors (1132328757).

123423822523 is a wasteful number, since it uses less digits than its factorization.

123423822523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132328756.

The product of its digits is 138240, while the sum is 37.

The spelling of 123423822523 in words is "one hundred twenty-three billion, four hundred twenty-three million, eight hundred twenty-two thousand, five hundred twenty-three".