12440323023 has 8 divisors (see below), whose sum is σ = 16588361136. Its totient is φ = 8292916800.

The previous prime is 12440322989. The next prime is 12440323057. The reversal of 12440323023 is 32032304421.

It is an interprime number because it is at equal distance from previous prime (12440322989) and next prime (12440323057).

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

It is not a de Polignac number, because 12440323023 - 2²⁰ = 12439274447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12440322984 and 12440323002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440323073) 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, 109948 + ... + 192273.

It is an arithmetic number, because the mean of its divisors is an integer number (2073545142).

Almost surely, 2^12440323023 is an apocalyptic number.

12440323023 is a deficient number, since it is larger than the sum of its proper divisors (4148038113).

12440323023 is a wasteful number, since it uses less digits than its factorization.

12440323023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315945.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 12440323023 its reverse (32032304421), we get a palindrome (44472627444).

The spelling of 12440323023 in words is "twelve billion, four hundred forty million, three hundred twenty-three thousand, twenty-three".