440310312423 has 20 divisors (see below), whose sum is σ = 668530257208. Its totient is φ = 288728070480.

The previous prime is 440310312419. The next prime is 440310312457. The reversal of 440310312423 is 324213013044.

440310312423 is a `hidden beast` number, since 4 + 403 + 10 + 3 + 1 + 242 + 3 = 666.

It is not a de Polignac number, because 440310312423 - 2² = 440310312419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440310312473) 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 19 ways as a sum of consecutive naturals, for example, 44551861 + ... + 44561742.

Almost surely, 2^440310312423 is an apocalyptic number.

440310312423 is a deficient number, since it is larger than the sum of its proper divisors (228219944785).

440310312423 is an equidigital number, since it uses as much as digits as its factorization.

440310312423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89113676 (or 89113667 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 440310312423 its reverse (324213013044), we get a palindrome (764523325467).

The spelling of 440310312423 in words is "four hundred forty billion, three hundred ten million, three hundred twelve thousand, four hundred twenty-three".