123431311223 has 8 divisors (see below), whose sum is σ = 134981567760. Its totient is φ = 111935926080.

The previous prime is 123431311177. The next prime is 123431311309. The reversal of 123431311223 is 322113134321.

It is a happy number.

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

It is not a de Polignac number, because 123431311223 - 2¹⁰ = 123431310199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123431311192 and 123431311201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123431311723) 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, 13713140 + ... + 13722137.

It is an arithmetic number, because the mean of its divisors is an integer number (16872695970).

Almost surely, 2^123431311223 is an apocalyptic number.

123431311223 is a deficient number, since it is larger than the sum of its proper divisors (11550256537).

123431311223 is a wasteful number, since it uses less digits than its factorization.

123431311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27435697.

The product of its digits is 2592, while the sum is 26.

Adding to 123431311223 its reverse (322113134321), we get a palindrome (445544445544).

The spelling of 123431311223 in words is "one hundred twenty-three billion, four hundred thirty-one million, three hundred eleven thousand, two hundred twenty-three".