123426247231 has 4 divisors (see below), whose sum is σ = 141058568272. Its totient is φ = 105793926192.

The previous prime is 123426247223. The next prime is 123426247253. The reversal of 123426247231 is 132742624321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132742624321 = 397 ⋅334364293.

It is a cyclic number.

It is not a de Polignac number, because 123426247231 - 2³ = 123426247223 is a prime.

It is a super-2 number, since 2×123426247231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123426247291) 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, 8816160510 + ... + 8816160523.

It is an arithmetic number, because the mean of its divisors is an integer number (35264642068).

Almost surely, 2^123426247231 is an apocalyptic number.

123426247231 is a deficient number, since it is larger than the sum of its proper divisors (17632321041).

123426247231 is an equidigital number, since it uses as much as digits as its factorization.

123426247231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17632321040.

The product of its digits is 96768, while the sum is 37.

The spelling of 123426247231 in words is "one hundred twenty-three billion, four hundred twenty-six million, two hundred forty-seven thousand, two hundred thirty-one".