1040440430323 has 8 divisors (see below), whose sum is σ = 1189131170400. Its totient is φ = 891763788480.

The previous prime is 1040440430321. The next prime is 1040440430363. The reversal of 1040440430323 is 3230340440401.

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

It is a cyclic number.

It is not a de Polignac number, because 1040440430323 - 2¹ = 1040440430321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040440430291 and 1040440430300.

It is not an unprimeable number, because it can be changed into a prime (1040440430321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3365938 + ... + 3662023.

It is an arithmetic number, because the mean of its divisors is an integer number (148641396300).

Almost surely, 2^{1040440430323} is an apocalyptic number.

1040440430323 is a deficient number, since it is larger than the sum of its proper divisors (148690740077).

1040440430323 is an equidigital number, since it uses as much as digits as its factorization.

1040440430323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7049117.

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

Adding to 1040440430323 its reverse (3230340440401), we get a palindrome (4270780870724).

The spelling of 1040440430323 in words is "one trillion, forty billion, four hundred forty million, four hundred thirty thousand, three hundred twenty-three".