440402312323 has 4 divisors (see below), whose sum is σ = 448711789968. Its totient is φ = 432092834680.

The previous prime is 440402312321. The next prime is 440402312369. The reversal of 440402312323 is 323213204044.

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

It is a cyclic number.

It is not a de Polignac number, because 440402312323 - 2¹ = 440402312321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440402312291 and 440402312300.

It is not an unprimeable number, because it can be changed into a prime (440402312321) 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, 4154738743 + ... + 4154738848.

It is an arithmetic number, because the mean of its divisors is an integer number (112177947492).

Almost surely, 2^440402312323 is an apocalyptic number.

440402312323 is a deficient number, since it is larger than the sum of its proper divisors (8309477645).

440402312323 is an equidigital number, since it uses as much as digits as its factorization.

440402312323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8309477644.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 440402312323 its reverse (323213204044), we get a palindrome (763615516367).

The spelling of 440402312323 in words is "four hundred forty billion, four hundred two million, three hundred twelve thousand, three hundred twenty-three".